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 Chemistry Questions

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Q:

What is the maximum  number of states of matter?

A) Three B) Four
C) Five D) Variable
 
Answer & Explanation Answer: C) Five

Explanation:

There   are five known   states   of matter:    solids,    liquids,    gases, plasma and Bose-Einstein condensates.  The  main  difference in the structures of each state is in the densities of the particles.

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Q:

Which of the following is NOT a nucleon?

A) Proton B) Electron
C) Neutron D) No option is correct
 
Answer & Explanation Answer: B) Electron

Explanation:
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4 1827
Q:

The common name of hydrogen peroxide is

A) borax B) bleach (liquid)
C) baking soda D) gypsum
 
Answer & Explanation Answer: B) bleach (liquid)

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0 1825
Q:

________ is used for making vinegar.

A) Tartaric acid B) Malic acid
C) Oxalic acid D) Acetic acid
 
Answer & Explanation Answer: D) Acetic acid

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1 1822
Q:

Which is the only non-metal placed at the left side of the Modern Periodic Table?

A) Hydrogen B) Carbon
C) Neon D) Helium
 
Answer & Explanation Answer: A) Hydrogen

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1 1819
Q:

Which of the following is a Synthetic rubber?

A) Leoprene B) Monoprene
C) Neoprene D) Isoprene
 
Answer & Explanation Answer: C) Neoprene

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2 1816
Q:

Fe has 26 protons in its nucleus. What are the number of electrons in Fe2+ (II) ion?

A) 24 B) 26
C) 28 D) 13
 
Answer & Explanation Answer: A) 24

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1 1815
Q:

The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 1st group and the 4th period?

A) 21 B) 17
C) 19 D) 9
 
Answer & Explanation Answer: C) 19

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