Chemistry Quiz Set 08

Question No.1

Which of the following substances is sublimated?

1. Ice
2. Camphor
3. Wax
4. Ethanol

Select Answer

Correct Answer: ( B )  

Question No.2

Hydrogen gas is generally prepared by

1. Steaming of red hot coke
2. Reaction of granulated zinc with diluted H₂SO₄
3. Reacting pure zinc with diluted H₂SO₄
4. Zinc reaction with concentrated H₂SO₄

Select Answer

Correct Answer: ( C )  

Question No.3

Which of the following electrolyte is used in car battery?

1. Hydrochloric acid
2. Acetic acid
3. Sulphuric acid
4. Nitric acid

Select Answer

Correct Answer: ( A )  

Question No.4

Saccharin is made up of

1. Toluene
2. Phenol
3. Propane
4. Butane

Select Answer

Correct Answer: ( A )  

Question No.5

In India, it has been the practice of not using any type of chemical as a preservative for making pickles since ancient times. What is the component that prevents pickle from getting spoiled?

1. Chili
2. Coriander
3. Oil
4. Salt

Select Answer

Correct Answer: ( D )  

Question No.6

The advantage of detergents over soaps is

1. Detergents are soluble in water
2. Detergents could not give much lather
3. Soaps give lather with only soft water
4. Detergents give lather even with hard water

Select Answer

Correct Answer: ( D )  

Question No.7

Which among the following is pure matter?

1. Carbon dioxide
2. Brass
3. Air
4. Wood

Select Answer

Correct Answer: ( A )  

Question No.8

Milk of Magnesia' is a suspension of

1. Magnesium sulphate
2. Magnesium carbonate
3. Magnesium hydroxide
4. Magnesium chloride

Select Answer

Correct Answer: ( C )  

Question No.9

Which of the following is ozene depleting pesticide?

1. DDT
2. Benzene
3. Methyl bromide
4. Ethylene ozonide

Select Answer

Correct Answer: ( C )  

Question No.10

The fundamental particles present in the nucleus of an atom are

1. Electron, proton
2. Neutron, electron
3. Proton, neutron
4. Neutron, positron

Select Answer

Correct Answer: ( C )  

Question No.11

Which of the following element is used to increase the protection resistance of steel ?

1. Chromium
2. Copper
3. Tungsten
4. Vanadium

Select Answer

Correct Answer: ( A )  

Question No.12

Continuous use of the secondary refrigerant is as follows

1. Big freezers
2. Domestic refrigerators
3. Ice making factory
4. Water cooling

Select Answer

Correct Answer: ( C )  

Question No.13

Which of the following is used as an anti-freeze in automobile engines?

1. Propyl alcohol
2. Ethanol
3. Methanol
4. Ethylene glycol

Select Answer

Correct Answer: ( D )  

Question No.14

CaOCl₂ is the chemical formula for a compound regarded as

1. Soda ash
2. Lime
3. Bleaching powder
4. Plaster of Paris

Select Answer

Correct Answer: ( C )  

Question No.15

Azurite is a mineral of which of these metals?

1. Copper
2. Silver
3. Magnesium
4. Iron

Select Answer

Correct Answer: ( A )  

Question No.16

The process of heating ore in presence of oxygen is called

1. Roasting
2. Calcination
3. Corrosion
4. Extraction

Select Answer

Correct Answer: ( A )  

Question No.17

The presence of ozone in the stratosphere is responsible for

1. increasing the average global temperature in recent years
2. higher rate of photosynthesis
3. checking the penetration of ultra-violet rays to the earth
4. supplying oxygen for people travelling in jets

Select Answer

Correct Answer: ( C )  

Question No.18

The most suitable vessel for storing conc. Sulphuric acid is

1. Copper vessel
2. Aluminium vessel
3. Glass vessel
4. Earthern vessel

Select Answer

Correct Answer: ( C )  

Question No.19

Galvanised iron is made by coating iron with

1. Zinc
2. Nickel
3. Chromium
4. Sulphur

Select Answer

Correct Answer: ( A )  

Question No.20

Which element is called 'wandering element' in chemistry?

1. Carbon
2. Oxygen
3. Nitrogen
4. Hydrogen

Select Answer

Correct Answer: ( D )  

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