The speed of light is __________?

A. 280,000 km/s
B. 300,000 km/s
C. 320,000 km/s
D. None of these

The radioactive isotope of hydrogen is called___________?

A. Tritium
B. Deuterium
C. Protium
D. Ortho-hydrogen

which one is the most common disease?

A. Dental
B. Leprosy
C. Headache
D. Migraine

Electron was discovered by?

A. Michael faraday
B. James maxwell
C. Yuri gagarin
D. J.j thomson

The good sources of Vitamin-A are?

A. Green leafy vegetables
B. Seeds
C. Fresh vegetables and fruits
D. Sea foods

The good sources of Vitamin-B Complex are?

A. Green leafy vegetables
B. Seeds
C. Fresh vegetables and fruits
D. Sea foods

The main function of kidney is____________?

A. To control blood pressure
B. To control body temperature
C. To remove waste from blood
D. To help in digestion of bady

The energy stored in a dam is___________?

A. Kinetic energy
B. Electrical energy
C. Potential energy
D. None of these

Moon light reaches to earth in___________seconds?

A. 0.3 seconds
B. 1.3 seconds
C. 2.3 seconds
D. 3.3 seconds

Water is a highly effective coolant for a car engine because _________?

A. Water is good conductor of heat
B. Water has very high specific heat capacity
C. Water boils at a comparatively high temperature
D. Evaporation of water produces lot of cooling