Question Detail

What nucleus of atom contains ?

protons
electrons
electrons and protons
protons and neutrons

Answer: Option D

Similar Questions :

1. What is used to avoid melting of ice ?

Gelatine
Butane
Methane
Any acid

Answer: Option A

2. Mass number of a nucleus is :

the sum of the number of protons and neutrons present in the nucleus
always more than the atomic weight
always less than its atomic number
None of above

Answer: Option A

3. Which one of the following metals does not react with water to produce Hydrogen?

Cadmium
Lithium
Potassium
Sodium

Answer: Option A

4. The nuclear particles which are assumed to hold the nucleons together are ?

positrons
neutrons
electrons
mesons

Answer: Option D

5. Which acid is present in lemon ?

marlic acid
citric acid
lactic acid
tartaric acid

Answer: Option B

Explanation:

citric acid is present in lemon.

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