Which of the following is a ripening hormone?

• GA-3
• Auxin
• Cytokinin
• Ethylene
Correct Option: D  [ Ethylene ]

Remark: Ethylene is used for the controlled ripening of citrus fruits, tomatoes, bananas and many other fruits, vegetables and flowers.

What is the main property of mercury for using it in a clinical thermometer?

• Good conductor of heat
• High density
• Good conductor of electricity
• Easily available
Correct Option: A  [ Good conductor of heat ]

Remark:

How much time the light from Sun takes to reach the Earth ?

• 2 minutes
• 4 minutes
• 8 minutes
• 12 minutes
Correct Option: C  [ 8 minutes ]

Remark: 8 minutes and 20 seconds

What is condensation?

• Change of Solid into liquid
• Change of vapour into liquid
• Change of Liquid into Gas
• None of these
Correct Option: B  [ Change of vapour into liquid ]

Remark:

Which of the following is the first calculating device ?

• Abacus
• Calculator
• Turing machine
• Pascaline
Correct Option: A  [ Abacus ]

Remark:

What is the rarest element on earth?

• Radium
• Einsteinium
• Astatine
• none of these
Correct Option: C  [ Astatine ]

Remark: Astatine is a very rare radioactive chemical element with the chemical symbol At and atomic number 85

Which gas is used as fire extinguisher?

• Nitrogen dioxide
• Carbon monoxide
• Carbon dioxide
• Nitrous oxide
Correct Option: C  [ Carbon dioxide ]

Remark:

Which of the following is not a member of vitamin B Complex ?

• Thiamine
• Riboflavin
• Folic acid
• Ascorbic acid
Correct Option: D  [ Ascorbic acid ]

Remark:

The science dealing with the study of phenomena at very low temperature is known as :

• Refrigenics
• Cryogenics
• Cytogenics
• Frozenics
Correct Option: B  [ Cryogenics ]

Remark:

A rocket functions on which of the following laws ?

• Newtons first law
• Newtons second law
• Newtons third law
• All of the above
Correct Option: C  [ Newtons third law ]

Remark: