OBJECTIVE TYPE QUESTIONS

1. The most potent greenhouse gas among the following is __?
a. Carbon dioxide
b. Oxygen
c. Water Vapor
d. Ozone

Answer: Water Vapor

2. Potassium nitrate is used in ___________
a) Fetiliser
b) Medicine
c) Soda
d) Bleeching Powder

Answer: a) Fetiliser

3. Which among the following blood groups has A and B antigens on RBC (Red Blood Cells) ?
a. O
b. AB
c. B
d. A

Answer: AB

4. Brass gets discoloured in air because of the presence of which of the following gases in air?  
a. Nitrogen
b. Hydrogen sulphide
c. Carbon dioxide
d. Oxygen

Answer: Hydrogen sulphide


5.  the following disease is also known as factor IX deficiency, or Christmas disease?
a. Haemophilia A
b. Hepatitis B
c. Haemophilia B
d.Hepatitis A

Answer: c. Haemophilia B

4. Anaemia is caused by __:
a. Decrease in number of Bilirubin
b. Decrease in number of platelets
c. Decrease in number of Glucogen
d. Decrease in number of Red Blood Cells

Answer: Decrease in number of Red Blood Cells