Chemistry Questions

Q:

Which process usually requires water?

A) Physical weathering B) Mass wasting
C) Chemical weathering D) Erosion
 
Answer & Explanation Answer: C) Chemical weathering

Explanation:

Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.

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4 1919
Q:

Which process forms exfoliation domes?

A) biological activity B) frost wedging
C) unloading D) reactions with oxygen
 
Answer & Explanation Answer: D) reactions with oxygen

Explanation:
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1 1917
Q:

Which of the following can be beaten and converted into thin sheets?

A) Zinc B) Phosphorus
C) Sulphur D) Oxygen
 
Answer & Explanation Answer: A) Zinc

Explanation:
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1 1917
Q:

The biogas used for cooking is a mixture of which of the following ?

A) Carbon dioxide & oxygen B) Isobutane & propane
C) Methane & carbon monoxide D) Methane & carbon dioxide
 
Answer & Explanation Answer: D) Methane & carbon dioxide

Explanation:
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4 1917
Q:

Which drug is used as a Nonsteroidal anti-inflammatory drug?

A) Risedronate B) Diazepam
C) Folic Acid D) Ibuprofen
 
Answer & Explanation Answer: D) Ibuprofen

Explanation:
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0 1915
Q:

What is the number of groups and periods in the modern periodic table?

A) 18, 7 B) 18, 8
C) 16, 7 D) 16, 8
 
Answer & Explanation Answer: A) 18, 7

Explanation:
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0 1906
Q:

In arc welding, Argon is used because of its

A) Low reactivity with metal B) Ability to lower the melting point of the metal
C) High flammability D) High calorific value
 
Answer & Explanation Answer: A) Low reactivity with metal

Explanation:
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1 1905
Q:

The mass of proton and mass of ________ is same.

A) Neutron B) Electron
C) Isoprone D) Alpha particle
 
Answer & Explanation Answer: A) Neutron

Explanation:
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2 1904