NCERT CHEMISTRY MOCK TEST 2

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NCERT CHEMISTRY MOCK TEST 2

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ABOUT THIS MOCK TEST

🟥 TOPIC : NCERT CHEMISTRY MOCK TEST 2

🟥 NUMBER OF QUESTIONS : 25

🟥 TIME : 15 MINS

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NCERT CHEMISTRY MOCK TEST 2

🟥 NCERT CHEMISTRY MOCK TEST 2

🟥 QUESTIONS : 25

🟥 TIME : 15 MINS

1 / 25

1) Which one of the following is produced during the formation of photochemical smog?

A) Hydrocarbons

B) Nitrogen Oxide

C) Ozone

D) Methane

2 / 25

2) The water pollution in river is measured by the dissolved amount of

A) Chlorine

B) Ozone

C) Nitrogen

D) Oxygen

3 / 25

3) Physico-chemical characteristics of water in water sources undergo changes due to

A) aquatic macrophytes

B) aquatic fungi

C) effluents

D) evapotranspiration

4 / 25

4) Which one of the following fuels causes minimum environmental pollution ?

A) Diesel

B) Coal

C) Hydrogen

D) Kerosene

5 / 25

5) The final Agent Orange raid in Vietnam took place in 1970– areas have begun to bloom again. But 19 years after the war’s end, it seems plain that Agent Orange is killing and maiming human beings, something it never intended to do. The apparent toxic fallout from those clouds–is a crop of human miseries including cancers, miscarriages and birth defects-that may persist for decades." The offensive substance referred to in this quotation is:

A) DDT used as insecticide

B) A complex mixture of herbicides and weedicides used to increase agricultural output in the South Vietnam under the U.S. aid programme

C) A complex mixture of DDT and other insecticides used at aerial sprays for protection against malaria and other tropical diseases

D) Dioxin used as defoliants

6 / 25

6) With reference to the usefulness of the by-products of sugar industry , which of the following statements is/ are correct?

1. Bagasse can be used as biomass fuel for the generation of energy.

2. Molasses can be used as one of the feedstocks for the production of synthetic chemical fertilizers.

3. Molasses can be used for the production of ethanol.

Select the correct answer using the codes given below.

A) 1 only

B) 2 and 3 only

C) 1 and 3 only

D) 1, 2 and 3

7 / 25

7) Consider the following statements : Chlorofluorocarbons, known as ozone-depleting substances, are used

1. In the production of plastic foams

2. In the production of tubeless tyres

3. In cleaning certain electronic components

4. As pressurizing agents in aerosol cans

Which of the statements given above is/are correct?

A) 1, 2 and 3 only

B) 4 only

C) 1, 3 and 4 only

D) 1, 2, 3 and 4

8 / 25

8) Which one of the following is used as an explosive?

A) Phosphorus trichloride

B) Mercuric oxide

C) Graphite

D) Nitroglycerine

9 / 25

9) Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?

A) Hydrogen and Oxygen

B) Oxygen and acetylene

C) Methane and air

D) Carbon dioxide and methane

10 / 25

10) What is Bisphenol A (BPA)?

A) A medical test for detecting cancer

B) A test for testing the use of drugs to improve performance by athletes

C) A chemical used for the development of food packaging materials

D) A special type of alloy steel

11 / 25

11) Which one of the following is another name of RDX?

A) Cyanohydrin

B) Dextran

C) Cyclohexane

D) Cyclonite

12 / 25

12) Consider the following chemicals:

1. Benzene

2. Carbon tetrachloride

3. Sodium carbonate

4. Trichloroethylene

Which of the above/is are used as dry cleaning chemical?

A) 1 only

B) 2 only

C) 1, 2 and 4 only

D) 1, 2, 3 and 4

13 / 25

13) Assertion (A) : The main constituent of the liquefied petroleum gas is methane.

Reason (R) : Methane can be used directly for burning in homes and factories where it can be supplied through pipelines.

A) Both A and R are true and R is the correct explanation of A

B) Both A and R are true but R is not the correct explanation of A

C) A is true but R is false

D) A is false but R is true

14 / 25

14) Consider the following statements:

1. Liquefied natural gas (LNG) is liquefied under extremely cold temperatures and high pressure to facilitate storage or transportation in specially designed vessels.

2. First LNG terminal in India was built in Hassan.

3. Natural gas liquids (NGL) are separated from LPG and these include ethane, propane, butane and natural gasoline.

Which of the statements given above is/are correct?

A) 1 only

B) 1 and 3

C) 2 and 3

D) 1, 2, and 3

15 / 25

15) The purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is

1. to keep the washing powder dry

2. to maintain the alkalinity of the powder

Which of these statements is/are correct?

A) only 1

B) Only 2

C) Both 1 and 2

D) Neither 1 nor 2

16 / 25

16) Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons?

A) Methane, ethane, propane and butane

B) Propane, butane, ethane and methane

C) Butane, ethane, propane and methane

D) Butane, propane, ethane and methane

17 / 25

17) Assertion (A) : Formic acid is a stronger acid than acetic acid.

Reason (R) : Formic acid is an organic acid.

A) Both A and R are true and R is the correct explanation of A

B) Both A and R are true but R is not a correct explanation of A

C) A is true but R is false

D) A is false but R is true

18 / 25

18) Consider the following statements about acetylene:

1. It is used in welding industry

2. It is a raw material for preparing plastics

3. It is easily obtained by mixing silicon carbide and water of these statements

A) 1 and 2 are correct

B) 1 and 3 are correct

C) 2 and 3 are correct

D) 1, 2 and 3 are correct

19 / 25

19) Assertion (A) : Phenyl is used as a household germicide.

Reason (R) : Phenyl is phenol derivative and phenol is an effective germicide.

A) Both A and R are true and R is the correct explanation of A

B) Both A and R are true but R is NOT the correct explanation of A

C) A is true but R is false

D) A is false but R is true

20 / 25

20) Which one of the following is used as an anti-freeze for the automobile engines?

A) Propyl alcohol

B) Ethanol

C) Methanol

D) Ethylene glycol

21 / 25

21) Which one of the following has the highest fuel value?

A) Hydrogen

B) Charcoal

C) Natural gas

D) Gasoline

22 / 25

22) Which one of the following was used as a chemical weapon in the first world war ?

A) Carbon monoxide

B) Hydrogen cyanide

C) Mustard gas

D) Water gas

23 / 25

23) Which one of the following is an active component of oil of clove?

A) Menthol

B) Eugenol

C) Methanol

D) Benzaldehyde

24 / 25

24) The characteristic odour of garlic is due to

A) a chloro compound

B) a sulphur compound

C) a fluorine compound

D) acetic acid

25 / 25

25) The offending substance in the liquor tragedies leading to blindness etc. is

A) ethyl alcohol

B) amyl alcohol

C) benzyl alcohol

D) methyl alcohol

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NCERT CHEMISTRY MOCK TEST 2

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