Who had discovered oxygen?

• Rutherford
• William Harvey
• Priestly
• Galileo
Correct Option: C  [ Priestly ]

Remark:

All enzymes are actually

• Protein
• Carbohydrates
• Fatty acids
• Steroids
Correct Option: A  [ Protein ]

Remark:

What changes will happen to a ball of ice and water kept at exactly zero degree Celsius?

• All ice will melt
• All water will become ice
• No change will happen
• Only some ice will melt
Correct Option: C  [ No change will happen ]

Remark:

The weight of a body at the centre of the earth is:

• zero
• infinite
• same as at other places
• none of these
Correct Option: A  [ zero ]

Remark:

Sound waves in air are

• Transverse
• Longitudinal
• Electromagnetic
• Polarized
Correct Option: B  [ Longitudinal ]

Remark:

PINAKA often seen in news, is a / an:

• Anti-submarine torpedo and research vehicle
• Aircraft carrier
• Multi barrel Rocket Launch (MBRL) system
• Guided missile frigate submarine warship
Correct Option: C  [ Multi barrel Rocket Launch (MBRL) system ]

Remark:

Magnification produced by a rear view mirror fitted in vehicles:

• is less than the object
• is more than the object
• is equal to the object
• can be more or less than the object depending upon the position of object in front of it.
Correct Option: A  [ is less than the object ]

Remark:

Growth hormone is produced by :

• Bones
• Pituitary gland
• Thyroid gland
• Adrenal gland
Correct Option: B  [ Pituitary gland ]

Remark:

Cause of global warming is:

• Excessive use of organic manure
• Increase in the amount of CO₂ in the atmosphere
• Increase in the amount of atmospheric nitrogen
• Excessive use of fertilizer.
Correct Option: B  [ Increase in the amount of CO₂ in the atmosphere ]

Remark:

Who invented Dynamite?

• J B Dunlop
• Alfred Nobel
• James Simons
• Peter Hargreaves
Correct Option: B  [ Alfred Nobel ]

Remark: