Chemistry Questions

Q:

________ is made by mixing iron with carbon and metals like chromium, nickel and manganese.

A) Ship B) Stainless Steel
C) Rust D) Ozone
 
Answer & Explanation Answer: B) Stainless Steel

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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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Q:

Atomic number of which of the following elements is greater than that of Chlorine

A) Potassium B) Sulphur
C) Aluminium D) Phosphorus
 
Answer & Explanation Answer: A) Potassium

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Q:

The atoms of Germanium, Arsenic, Selenium and Bromine contain ...... shells.

A) 3 B) 7
C) 5 D) 4
 
Answer & Explanation Answer: D) 4

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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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Q:

What is the name of the acid in grapes?

A) Lactic acid B) Formic acid
C) Acetic acid D) Tartaric acid
 
Answer & Explanation Answer: D) Tartaric acid

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Q:

Atomic number of which of the following elements is greater than that of Zinc

A) Copper B) Iron
C) Chromium D) Bromine
 
Answer & Explanation Answer: D) Bromine

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Q:

Atomic bomb is based on which of the following principle?

A) Nuclear fusion B) Nuclear fission
C) Natural radioactivity D) All options are correct
 
Answer & Explanation Answer: B) Nuclear fission

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