Question Detail

Who is regarded as father of modern chemistry ?

Ruterford
Einstein
Lavoisier
C.V. Raman

Answer: Option C

Similar Questions :

1. Alloys made with mercury as one metal are called ?

mixtures
emulsions
solders
amalgams

Answer: Option D

2. Which one of the following is the softest?

sodium
iron
aluminium
lithium

Answer: Option A

3. Which of the following gases is the most toxic?

Carbon dioxide
Sulphur dioxide
Carbon monoxide
Acetic acid

Answer: Option C

4. What is laughing gas ?

nitrous oxide
nitric oxide
nitrogen oxide
nitrogen peroxide

Answer: Option A

5. 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

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Dorjey 9 years ago

how it ispossible that group 2 element can form two covalent bonds when their electron are paired up???

pardeep 9 years ago replied

It contain empty p orbital due to that s orbital e unpaired and for covalent bond

pardeep 9 years ago replied

Due to presence vacant p orbital s orbital electrons unpaired and form covalent bond

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