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Todays' Thought
Man, alone, has the power to transform his thoughts into physical reality; man, alone, can dream and make his dreams come true.
- Napoleon Hill
केवल इंसानों में अपने विचारों को भौतिक वास्तविकता में बदलने की शक्ति होती है, केवल इंसान सपने देख सकता है और उन्हें साकार कर सकता है |
- 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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