Academic Category


Todays' Thought
Edison failed 10, 000 times before he made the electric light. Do not be discouraged if you fail a few times.
- Napoleon Hill
एडिसन इलेक्ट्रिक बल्ब बनाने में 10,000 बार विफल हुए. यदि आप कुछ बार विफल हो जाते हैं तो हिम्मत मत हारिये |
- नेपोलियन हिल


    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

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