Academic Category


Todays' Thought
Develop success from failures. Discouragement and failure are two of the surest stepping stones to success.
- Dale Carnegie
असफलता को सफलता में बदलो. निराशा और असफलता सफलता के रास्ते में आने वाली दो निश्चित पद चिन्ह हैं |
- डेल कार्नेगी


    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