Academic Category


Todays' Thought
If you do work that you love, and the work fulfil you, the rest will come.
- Oprah Winfrey
यदि आप वो करें जो आप चाहते हैं, और वो काम आपको पूर्ण करे तो बाकी चीजें अपने आप आ जाएँगी |
- ओपरा विनफ्रे


    Chemistry Question & Answer in English

1.
Who is regarded as father of modern chemistry?
A.  Rutherford
B.  Einstein
C.  Lavoisier
D.  C.V. Raman

2.
The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is - 
A.  22
B.  2
C.  38
D.  20

3.
Which of the following is also known as Laughing gas -
A.  Nitric oxide
B.  Nitrous oxide
C.  Nitrogen penta oxide
D.  Nitrogen

4.
Which of the following is not a type of element -
A.  Metals
B.  Non- metals
C.  Gases
D.  Metalloids

5.
pH value of water is -
A.  4
B.  7
C.  12
D.  18