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 Chemistry Questions

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Q:

Alcohol is more volatile than water because _________ is lower than water

A) its boiling point B) its density
C) its viscosity D) its surface tension
 
Answer & Explanation Answer: A) its boiling point

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Filed Under: Chemistry
Exam Prep: Bank Exams

2 1932
Q:

Adding which substance gives blue colour to glass?

A) Manganese oxide B) Cobalt oxide
C) Chromium oxide D) Iron oxide
 
Answer & Explanation Answer: B) Cobalt oxide

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Filed Under: Chemistry
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1 1924
Q:

Which best describes the nucleus of an atom?

A) It is the densest part of the atom B) It has neutrons
C) It has protons D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The nucleus of an atom is the densest part of an atom. It contains the protons and neutrons of an atom.

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1 1923
Q:

Hydrogenation process is associated with which of the following?

A) Rubber B) Petroleum
C) Copper D) Edible fats
 
Answer & Explanation Answer: D) Edible fats

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2 1921
Q:

Calculate the relative molecular mass of water H2O?

A) 18u B) 1.8u
C) 2.0u D) 20u
 
Answer & Explanation Answer: A) 18u

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1 1921
Q:

A change in which one or more new substances are formed is called _________.

A) Physical Change B) Chemical Change
C) Rusting D) Galvanisation
 
Answer & Explanation Answer: B) Chemical Change

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1 1919
Q:

The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.

A) Crystallisation B) Melting point
C) Evaporation D) Galvanisation
 
Answer & Explanation Answer: B) Melting point

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0 1917
Q:

All atoms of the same element have the same

A) number of protons B) number of electrons
C) atomic number D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

All atoms of an element have the same number of protons. The number of protons in an element is a primary identifier known as its atomic number. The number of electrons is the same as the number of protons.

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Exam Prep: AIEEE , Bank Exams , CAT , GATE
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0 1914