General Awareness-Chemistry – SSC CGL Tier 1 previous year questions

Here is the compilation of all previous year question of General Awareness-Chemistry – with answers.

SSC CGL 2019 Questions

Ques 1] Which of the following metals is the most ductile metal?

  1. Tin
  2. Gold
  3. Aluminium
  4. Copper

Correct Answer : Gold

Ques 2 ) What is deposited on iron in the process of galvanization?

  1. Tin
  2. Zinc
  3. Copper
  4. Aluminium

Correct Answer : Zinc

Ques 3) Which of the following metals is the most reactive metal?

  1. Zinc
  2. Copper
  3. Iron
  4. Calcium

Correct Answer : Calcium

Ques 4 ) Rust needs three components to occur, i.e., __.

  1. Steel, iron and oxygen
  2. Helium, hydrogen and nitrogen
  3. Iron, nitrogen and moisture
  4. Iron, oxygen and moisture

Correct Answer : Iron, oxygen and moisture

SSC CGL 2017Questions

Question:1) Which acid is released when an Ant bites?[08-AUG-2017 Shift-1]

Options:
1) Hydrochloric Acid
2) Formic Acid
3) Acetic Acid
4) Phosphoric Acid

Correct Answer: Formic Acid

Question:2) Which among the following is an example of solid sol?[08-AUG-2017 Shift-1]

Options:
1) Milk of magnesia
2) Foam
3) Coloured gemstones
4) Rubber

Correct Answer: Coloured gemstones

Question:3)At what temperature (in Fahrenheit) pure water freezes?[08-AUG-2017 Shift-2]

Options:
1) 32
2) 0
3) 48
4) 37

Correct Answer: 32

Question:4)Process of gaining electrons is known as _____.[08-AUG-2017 Shift-2]

Options:
1) oxidation
2) reduction
3) radiation
4) both oxidation and reduction

Correct Answer: reduction

Question:5) What are isobars?[08-AUG-2017 Shift-3]

Options:
1) Elements with same atomic number but different mass number
2) Elements with different atomic number but same mass number
3) Elements with different atomic number and different mass number
4) Elements with same atomic number and same mass number

Correct Answer: Elements with different atomic number but same mass number

Question:6) Which of the following pairs is INCORRECT?[08-AUG-2017 Shift-3]

I. Haematite : Iron

II. Pitchblende : Copper

III. Monazite : Thorium

Options:
1) Only I
2) Only II
3) Only I and II
4) Only I and III

Correct Answer: Only II

Question:7) Which of the following bonds are weakest in nature?[09-AUG-2017 Shift-1]

Options:
1) Single bond
2) Double bond
3) Triple bond
4) Hydrogen bond

Correct Answer: Hydrogen bond

Question:8) In the following reaction, fill in the blank.[09-AUG-2017 Shift-1]

Acid + Base → _______ + Water

Options:
1) Carbon dioxide
2) Metal Oxide
3) Hydrogen Gas
4) Salt

Correct Answer: Salt

Question:9)A radio-active substance has a half life of six months. Three-fourth of the substance will decay in ______.[09-AUG-2017 Shift-3]

Options:
1) Six months
2) Ten months
3) Twelve Months
4) Twenty four months

Correct Answer: Twelve Months

Question:10)pH of the human blood is ______. [09-AUG-2017 Shift-3]

Options:
1) Slightly Acidic
2) Highly Acidic
3) Slightly Basic
4) Highly Basic

Correct Answer: Slightly Basic

Question:11)Process of loosing electrons is known as _____.[10-AUG-2017 Shift-2]

Options:
1) oxidation
2) reduction
3) radiation
4) both oxidation and reduction

Correct Answer: oxidation

Question:12)Anions are formed by _____.[10-AUG-2017 Shift-2]

Options:
1) losing of electrons
2) gaining of electrons
3) gaining of neutrons
4) losing of neutrons

Correct Answer: gaining of electrons

Question:13)Which of the following is a characteristic of an exothermic reaction?[10-AUG-2017 Shift-2]

Options:
1) Release of heat
2) Absorption of heat
3) Doesn’t involve any change in temperature
4) None of the option is correct

Correct Answer: Release of heat

Question:14) What is the chemical formula for Sodium Chloride (Salt)?[10-AUG-2017 Shift-2]

Options:
1) NaCl2
2) NaCl
3) Na2Cl
4) Na2C  

Correct Answer: NaCl

Question:15)What is an endothermic reaction?[10-AUG-2017 Shift-3]

Options:
1) Reaction in which heat is released.
2) Reaction in which heat is absorbed.
3) Reaction in which neither heat is released nor absorbed.
4) None of these

Correct Answer: Reaction in which heat is absorbed.

Question:16)Which of the following is an ore of Aluminium?[10-AUG-2017 Shift-3]

Options:
1) Galena
2) Cryollite
3) Cinnabar
4) Epsom Salt

Correct Answer: Cryollite

Question:17) What is nature of pH of Milk?[11-AUG-2017 Shift-1]

Options:
1) Slightly Acidic
2) Slightly Basic
3) Highly Acidic
4) Highly Basic

Correct Answer: Slightly Acidic

Question:18)Which among the following is not an example of emulsion?[11-AUG-2017 Shift-1]

Options:
1) Chocolate-Milk
2) Butter
3) Whipped Cream
4) Curd

Correct Answer: Curd

Question:19)In which industry Potassium Nitrate is used commercially?[11-AUG-2017 Shift-2]

Options:
1) Glass Manufacturing
2) Electroplating
3) Fire Cracker Manufacturing
4) Leather Industry

Correct Answer: Fire Cracker Manufacturing

Question:20)Which of the following is not an example of Allotrope?[11-AUG-2017 Shift-2]

Options:
1) Diamond
2) Graphite
3) Ozone
4) Steel

Correct Answer: Steel

Question:21)What is the common name of CaOCl2?

Options:
1) Baking Powder
2) Baking Soda
3) Bleaching Powder
4) Washing Soda

Correct Answer: Bleaching Powder

Question:22)What is the common characteristic of the elements of the same group in the periodic table?[11-AUG-2017 Shift-3]

Options:
1) Electrons in outer most shell
2) Total number of electrons
3) Total number of protons
4) Atomic weight

Correct Answer: Electrons in outer most shell

Question:23)Which disease is caused by Nickel?[11-AUG-2017 Shift-3]

Options:
1) Itai Itai
2) Dermatitis
3) Learning disability
4) Asthma

Correct Answer: Dermatitis

Question:24)What is an exothermic reaction?[12-AUG-2017 Shift-1]

Options:
1) Reaction in which heat is released.
2) Reaction in which heat is absorbed.
3) Reaction in which neither heat is released nor absorbed.
4) None of these

Correct Answer: Reaction in which heat is released.

Question:25)What are the main components of Brass Alloy?[12-AUG-2017 Shift-1]

Options:
1) Copper and Zinc
2) Copper and Strontium
3) Copper, Zinc and Nickel
4) Copper and Nickel

Correct Answer: Copper and Zinc

Question:26)What is the common name of Sodium Bicarborate?[12-AUG-2017 Shift-2]

Options:
1) Baking Soda
2) Washing Powder
3) Plaster of Paris
4) Fly Ash

Correct Answer: Baking Soda

Question:27)Which of the following is an ore of iron?[12-AUG-2017 Shift-2]

Options:
1) Dolomite
2) Epsom Salt
3) Siderite
4) Galena

Correct Answer: Siderite

Question:28) Which among the following is used to treat Indigestion?[12-AUG-2017 Shift-3]

Options:
1) Antacid
2) Antiseptic
3) Analgesic
4) Antibiotic

Correct Answer: Antacid

Question:29)Which of the following cannot be beaten into Sheets?[12-AUG-2017 Shift-3]

Options:
1) Gold
2) Silver
3) Potassium
4) Aluminum

Correct Answer: Potassium

Question:30)What is the process of conversion of solid state directly to gaseous state called?[16-AUG-2017 Shift-1]

Options:
1) Evaporation
2) Condensation
3) Sublimation
4) Distillation

Correct Answer: Sublimation

Question:31)What are the main components of Bronze Alloy?[16-AUG-2017 Shift-1]

Options:
1) Copper and Zinc
2) Copper and Tin
3) Zinc and Nickel
4) Aluminium and Nickel

Correct Answer: Copper and Tin

Question:32)Fog, clouds, mist are examples of _______. [16-AUG-2017 Shift-2]

Options:
1) Aerosol
2) Solid sol
3) Foam
4) Gel

Correct Answer: Aerosol

Question:33)Which of the following is a chemical formula of quicklime? [16-AUG-2017 Shift-2]

Options:
1) Ca2O
2) Ca2CO3
3) CaO2
4) CaO

Correct Answer: CaO

Question:34)Supercooling is cooling of liquid _____.[16-AUG-2017 Shift-3]

Options:
1) below melting point
2) below freezing point
3) at melting point
4) above melting point

Correct Answer: below freezing point

Question:35)Which of the following is also known as Carbolic Acid?[16-AUG-2017 Shift-3]

Options:
1) Phenol
2) Hydroxide
3) Sulphuric Acid
4) Ethanol

Correct Answer: Phenol

Question:36)Most liquids that conduct electricity are solutions of acids, bases and ______.[17-AUG-2017 Shift-1]

Options:
1) Copper
2) Aluminium
3) Salts
4) Iron

Correct Answer: Salts

Question:37)Which base is present in milk of magnesia?[17-AUG-2017 Shift-1]

Options:
1) Magnesium hydroxide
2) Ammonium hydroxide
3) Sodium hydroxide
4) Calcium hydroxide

Correct Answer: Magnesium hydroxide

Question:38)Kelvin (K) is the unit of measurement of ________.[17-AUG-2017 Shift-2]

Options:
1) Density
2) Pressure
3) Mass
4) Temperature

Correct Answer: Temperature

Question:39)What is the process of rust forming on iron called?[17-AUG-2017 Shift-2]

Options:
1) Rusting
2) Crystallisation
3) Shovel
4) Spade

Correct Answer: Rusting

Question:40)What is the name of the acid in an ant’s sting?[18-AUG-2017 Shift-1]

Options:
1) Acetic acid
2) Citric acid
3) Formic acid
4) Lactic acid

Correct Answer: Formic acid

Question:41)Which base is present in soap?[18-AUG-2017 Shift-1]

Options:
1) Sodium hydroxide
2) Silicon dioxide
3) Calcium hydroxide
4) Ammonium hydroxide

Correct Answer: Sodium hydroxide

Question:42)Metals react with sodium hydroxide to produce ___________.[18-AUG-2017 Shift-1]

Options:
1) oxygen gas
2) sodium
3) water
4) hydrogen gas

Correct Answer: hydrogen gas

Question:43)Which base is present in lime water?[18-AUG-2017 Shift-1]

Options:
1) Sodium hydroxide
2) Magnesium hydroxide
3) Calcium hydroxide
4) Ammonium hydroxide

Correct Answer: Calcium hydroxide

Question:44)Magnesium (Mg) + Oxygen (O2) = ?[18-AUG-2017 Shift-2]

Options:
1) Mg2O
2) MgO4
3) O2Mg
4) MgO

Correct Answer: MgO

Question:45)What is the reaction between an acid and a base called?[18-AUG-2017 Shift-2]

Options:
1) Desalination
2) Crystallisation
3) Neutralisation
4) Sublimation

Correct Answer: Neutralisation

Question:46) In an acid base reaction which product is produced along with a salt?[18-AUG-2017 Shift-3]

Options:
1) Hydrogen gas
2) Oxygen gas
3) Carbon dioxide
4) Water

Correct Answer: Water

Question:47)What is the process of melting also called?[18-AUG-2017 Shift-3]

Options:
1) Fusion
2) Galvanisation
3) Crystallisation
4) Evaporation

Correct Answer: Fusion

Question:48)Fire extinguishers emit which gas?[19-AUG-2017 Shift-3]

Options:
1) Carbon monoxide
2) Chlorine
3) Carbon dioxide
4) Nitrogen

Correct Answer: Carbon dioxide

Question:49)What is formed when Magnesium is burnt?[19-AUG-2017 Shift-3]

Options:
1) Baking Soda
2) Calcium Carbonate
3) Ash
4) Vinegar

Correct Answer: Ash

Question:50)A change in which no new substances are formed is called _____________.[20-AUG-2017 Shift-1]

Options:
1) Physical Change
2) Chemical Change
3) Rusting
4) Galvanisation

Correct Answer: Physical Change

Question:51)The property of metal by which it can be drawn into wires is called _____________.[20-AUG-2017 Shift-1]

Options:
1) maleability
2) viscosity
3) ductility
4) tensile strength

Correct Answer: ductility

Question:52)– A change in which a substance undergoes a change in its physical properties is called _____________.[20-AUG-2017 Shift-2]

Options:
1) Chemical Properties
2) Physical Properties
3) Chemical Change
4) Physical Change

Correct Answer: Physical Change

Question:53)The process of depositing a layer of zinc on iron is called ___________ .[20-AUG-2017 Shift-2]

Options:
1) Galvanisation
2) Crystallisation
3) Rusting
4) Baking

Correct Answer: Galvanisation

Question:54) ___________ is obtained by evaporation of sea.[20-AUG-2017 Shift-3]

Options:
1) Sugar
2) Iron
3) Salt
4) Steel

Correct Answer: Salt

Question:55)The passage of an electric current through a conducting liquid causes ___________.[20-AUG-2017 Shift-3]

Options:
1) Galvanisation
2) Evaporation
3) Physical Reaction
4) Chemical Reaction

Correct Answer: Chemical Reaction

Question:56)Blue Vitriol is another name for which of the following?[21-AUG-2017 Shift-1]

Options:
1) Copper Sulphate
2) Oxygen
3) Copper
4) Magnesium Oxide

Correct Answer: Copper Sulphate

Question:57)The rubbing surface of a matchbox has powdered glass and a little red ________________.[21-AUG-2017 Shift-1]

Options:
1) antimony
2) arsenic
3) silicon
4) phosphorus

Correct Answer: phosphorus

Question:58)Acetic Acid is another name for which of the following?[21-AUG-2017 Shift-2]

Options:
1) Vinegar
2) Baking Soda
3) Copper Sulphate
4) Magnesium Oxide

Correct Answer: Vinegar

Question:59)The reaction of Copper Sulphate and Iron produces Iron Sulphate and __________.[21-AUG-2017 Shift-2]

Options:
1) Vinegar
2) Ash
3) Baking Soda
4) Copper

Correct Answer: Copper

Question:60)A __________ thread is actually stronger than a steel wire.[21-AUG-2017 Shift-3]

Options:
1) wool
2) cotton
3) jute
4) nylon

Correct Answer: nylon

Question:61)The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.[21-AUG-2017 Shift-3]

Options:
1) Electroplating
2) Galvanisation
3) Rusting
4) Crystallisation

Correct Answer: Electroplating

Question:62)At boiling point of liquids , its [27 August 2016- Evening Shift]

Options:
1) Temperature increases
2) Atmospheric pressure increases
3) Temperature remains constant
4) Vapour pressure decreases

Correct Answer: Temperature remains constant

Question:63)Helium is added to the oxygen supply of deep sea divers because it is _________[27 August 2016- Evening Shift]

Options:
1) less poisonous than nitrogen
2) Lighter than nitrogen
3) Readily miscible with oxygen
4) less soluble in blood than nitrogen at high pressure

Correct Answer: less soluble in blood than nitrogen at high pressure

Question:64)Terylene is a condensation polymer of ethylene glycol and which acid?[27 August 2016- Evening Shift]

Options:
1) Benzoic Acid
2) Salicylic acid
3) Phthalic acid
4) Terephthalic acid

Correct Answer: Terephthalic acid

Question:65)The temperature of a liquid is 32° F. What is its temperature in Celsius scale?[27 August 2016- Evening Shift]

Options:
1) 32° C
2) 0° C
3) 100° C
4) 212° C

Correct Answer: 0° C

Question:66)The most extensive use of molasses after fermentation is for producing [27 August 2016- Morning Shift]

Options:
1) Methanol
2) Sugar
3) Ethanol
4) Sugarcane

Correct Answer: Ethanol

Question:67)The boiling point of liquids vary as [27 August 2016- Morning Shift]

Options:
1) pressure varies
2) temperature varies
3) volume varies
4) density varies

Correct Answer: pressure varies

Question:68)Zeolite is [27 August 2016- Morning Shift]

Options:
1) hydrated ferric oxide
2) hydrated sodium aluminium silicate
3) sodium hexameta phosphate
4) sodium tetra borate

Correct Answer: hydrated sodium aluminium silicate

Question:69)The temperature of a liquid is 32° F. What is its temperature in Celsius scale? [28 August 2016- Morning Shift]

Options:
1) 32° C
2) 0° C
3) 100° C
4) 212° C

Correct Answer: 0° C

Question:70)Water is used in a hot water bag because [28 August 2016- Morning Shift]

Options:
1) It is easily available
2) It has high specific gravity
3) It has high specific heat
4) It is a liquid substance

Correct Answer: It has high specific heat

Question:71)What is contained in Chlorophyll ?[28 August 2016- Evening Shift]

Options:
1) sodium
2) potassium
3) manganese
4) magnesium

Correct Answer: magnesium

Question:72)The biogas used for cooking is a mixture of which of the following ?[28 August 2016- Evening Shift]

Options:
1) Carbon dioxide & oxygen
2) Isobutane & propane
3) Methane & carbon monoxide
4) Methane & carbon dioxide

Correct Answer: Methane & carbon dioxide

Question:73)What is the product formed when sodium bicarbonate is heated bly? [29 August 2016- Morning Shift]

Options:
1) Sodium Carbonate
2) Sodium Hydroxide
3) Sodium Peroxide
4) Sodium Monoxide

Correct Answer: Sodium Carbonate

Question:74).The most pure form of carbon among the options is [29 August 2016- Morning Shift]

Options:
1) Anthracite
2) Lampblack
3) Graphite
4) Wood Charcoal

Correct Answer: Anthracite

Question:75). Which of the following is not soluble in water? [29 August 2016- Evening Shift]

Options:
1 ) Lead sulphate
2) Zinc sulphate
3) Potassium sulphate
4) Sodium sulphate

Correct Answer: Lead sulphate

Question:76)Activated Charcoal is used to remove colouring matter from pure substances by_______ [29 August 2016- Evening Shift]

Options:
1) Bleaching
2) Oxidation
3) Adsorption
4) Reduction

Correct Answer: Adsorption

Question:77)Silver gets corroded due to ________________ in air. [30 August 2016- Afternoon Shift]

Options:
1) Oxygen
2) Hydrogen Sulphide
3) Carbon dioxide
4) Nitrogen

Correct Answer: Hydrogen Sulphide

Question:78)Which of the following is a radioactive element? [30 August 2016- Afternoon Shift]

Options:
1) Cobalt
2) Uranium
3) Argon
4) Chromium

Correct Answer: Uranium

Question:79)Silica gel is a [30 August 2016- Afternoon Shift]

Options:
1) moisturizer
2) flavouring agent
3) drying agent
4) delicious food

Correct Answer: drying agent

Question:80)Biofertilizers convert nitrogen to _________ . [30 August 2016- Afternoon Shift]

Options:
1) nitrates
2) ammonia
3) nitrogenase
4) amino acids

Correct Answer: ammonia

Question:81)Temperature of distant luminous bodies can be determined by [31 August 2016- Morning Shift]

Options:
1) Mercury thermometers
2) Gas thermometers
3) Pyrometers
4) Colour thermometers

Correct Answer: Pyrometers

Question:82)Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in [31 August 2016- Morning Shift]

Options:
1) Conduction
2) Convection
3) Radiation
4) Both conduction and convection

Correct Answer: Convection

Question:83)Magnesium is a constituent metal of __________ . [01 September 2016- Morning Shift]

Options:
1) Chlorophyll molecule
2) DNA
3) Mitochondria
4) Ribosomes

Correct Answer: Chlorophyll molecule

Question:84)Name the gas used in preparation of bleaching powder [01 September 2016- Morning Shift]

Options:
1) Oxygen
2) Hydrogen
3) Nitrogen
4) Chlorine

Correct Answer: Chlorine

Question:85)Phosphorus is kept in water because [01 September 2016- Morning Shift]

Options:
1) its ignition temperature is very high
2) its ignition temperature is very low
3) its critical temperature is high
4) its critical temperature is low

Correct Answer: its ignition temperature is very low

Question:86)The commonly used coolant in refrigerators is [01 September 2016- Morning Shift]

Options:
1) Ammonia
2) Nitrogen
3) Freon
4) Oxygen

Correct Answer: Freon

Question:87)Which of the following is used as anaesthetics?[01 September 2016- Evening Shift]

Options:
1) N2
2) N2O
3) CH4
4) CO2

Correct Answer: N2O

Question:88)Which is the heaviest metal among the following?[01 September 2016- Evening Shift]

Options:
1) Gold
2) Silver
3) Iron
4) Copper

Correct Answer: Gold

Question:89)Nitrification is the biological process of converting [02 September 2016- Evening Shift]

Options:
1) N2 into nitrate
2) N2 into nitrite
3) Ammonia into nitrite
4) Ammonia into N2

Correct Answer: Ammonia into nitrite

Question:90)Trinitrotoluene is [02 September 2016- Evening Shift]

Options:
1) used to melt metals
2) used to fuse two metals
3) used as an abrasive
4) used as an explosive

Correct Answer: used as an explosive

Question:91)An eudiometer measures [02 September 2016- Evening Shift]

Options:
1) Atmospheric pressure
2) Time
3) Volume of gases
4) Vapour pressure

Correct Answer: Volume of gases

Question:92)Potassium Permanganate is used for purifying drinking water, because_________ [02 September 2016- Evening Shift]

Options:
1) It is a reducing agent
2) It is an oxidising agent
3) It is a sterilising agent
4) It dissolves the impurities of water

Correct Answer: It is an oxidising agent

Question:93)0°K is equivalent to [03 September 2016- Morning Shift]

Options:
1) 273°C
2) -273°C
3) 0°C
4) 100°C

Correct Answer: -273°C

Question:94)Which of the following is not a donor atom? [03 September 2016- Morning Shift]

Options:
1) Phosphorus
2) Antimony
3) Arsenic
4) Aluminium

Correct Answer: Aluminium

Question:95)Bee sting contains________________ [03 September 2016- Evening Shift]

Options:
1) An acidic liquid
2) a salt solution
3) an alkaline liquid
4) a corrosive liquid

Correct Answer: An acidic liquid

Question:96)Besides CO2, the other green house gas is [04 September 2016- Morning Shift]

Options:
1) CH4
2) N2
3) Ar
4) O2

Correct Answer: CH4

Question:97)The manufacturing of iron from iron-ore involves the process of ? [06 September 2016]

Options:
1) Oxidation
2) Reduction
3) Electrolysis
4) Fractional distillation

Correct Answer: Reduction

Question:98)n emulsion is a colloidal solution of?[06 September 2016]

Options:
1) Liquid in liquid
2) Solid in liquid
3) Gas in solid
4) Solid in Solid

Correct Answer: Liquid in liquid

Question:99)The food in Onion is stored in the form of _______ ?[06 September 2016]

Options:
1) Cellulose
2) Protein
3) Starch
4) Sugar

Correct Answer: Cellulose

Question:100)When iron rusts, its weight ….. [07 September 2016- Morning Shift]

Options:
1) decreases
2) increases
3) remains the same
4) first increases and then decreases

Correct Answer: increases

Question:101)When iron rusts, its weight ….. [07 September 2016- Morning Shift]

Options:
1) decreases
2) increases
3) remains the same
4) first increases and then decreases

Correct Answer: increases

Question:102)What are Aldehydes ? [08 September 2016- Evening Shift]

Options:
1) Mild oxidising agents
2) Strong oxidising agents
3) Strong reducing agents
4) Mild reducing agents

Correct Answer: Strong reducing agents

Question:103)Which of the following gases is known as “Laughing Gas”? [08 September 2016- Evening Shift]

Options:
1) Nitrous oxide
2) Nitrogen peroxide
3) Nitrogen
4) Nitric oxide Correct Answer: Nitrous oxide

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