Academic Category


Todays' Thought
Action to be effective must be directed to clearly conceived ends.
- Jawaharlal Nehru
कार्य के प्रभावी होने के लिए उसे स्पष्ठ लक्ष्य की तरफ निर्देशित किया जाना चाहिए |
- जवाहरलाल नेहरु


    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