Which one of the following results in the discovery of proton.

A. Cathode rays
B. Canal rays
C. X-rays
D. Alpha rays

An abnormally great desire for food, excessive eating is called?

A. Dysphagia
B. Bulimia nervosa
C. Phagia
D. None of the above

Saffron is obtained from which among the following parts of the plant ________?

A. Anther
B. Stigma
C. Stamen
D. Pollen

The most important function of perspiration is?

A. Get rid of body waste
B. Regulate body temperature
C. Regulate body waste
D. Lubricate the skin

There are ______types of respiration takes place in frog.

A. 1
B. 2
C. 3
D. None of these

Our atmosphere comprises of __________ Nitrogen?

A. 38% nitrogen
B. 58% nitrogen
C. 78% nitrogen
D. None of these

Our atmosphere consists of___________ Oxygen approximately?

A. 11% oxygen approximately
B. 21% oxygen approximately
C. 31% oxygen approximately
D. None of these

Our atmosphere consists of__________ CO2?

A. 0.03 to 0.04% co2
B. 0.3 to 0.4% co2
C. 3 to 4% co2
D. None of these

Which one of the following element has highest oxidation state in its compounds ?

A. Cr
B. Mn
C. Sn
D. O

Which of the following possesses maximum hydration energy ?

A. Na+
B. K+
C. Mg+2
D. Ca+2