The heart covered by a membrane called

• Myocardium.
• Pericardium
• Aorta
• None of These
Correct Option: B  [ Pericardium ]

Remark:

Which one of the following is a chemical change ?

• Burning of candle
• Melting of wax
• Vapourisation of water
• Magnetising of Iron
Correct Option: A  [ Burning of candle ]

Remark:

What does 'GM' stand for in GM food?

• Generally modified
• Genetically modified
• Genetically medicated
• None of these
Correct Option: B  [ Genetically modified ]

Remark:

Sodium stearate is a salt and is used?

• in gunpowder
• in Paint
• to make Soap
• to make fertilizer
Correct Option: C  [ to make Soap ]

Remark:

Where is 'Dakshin Gangotri' located ?

• South Pole
• Himalaya
• Uttarakhand
• Antarctica
Correct Option: D  [ Antarctica ]

Remark: First scientific base station of India situated in Antarctica to carry out scientific works.

Hydro?uoric acid is not kept in glass bottles because it reacts with:

• visible light
• sodium oxide of glass
• aluminium oxide of glass
• silicon dioxide of glass
Correct Option: D  [ silicon dioxide of glass ]

Remark:

The purest form of iron is

• White cast iron
• Grey cast iron
• Wrought iron
• Steel
Correct Option: C  [ Wrought iron ]

Remark:

Montreal Protocol is related to:

• Ozone depletion
• Bio-diversity
• Biological weapons
• European Community
Correct Option: A  [ Ozone depletion ]

Remark:

Human beings hearing range is:

• 30 to 30,000 Hz
• 50 to 50,000 Hz
• 20 to 20,000 Hz
• 40 to 40,000 Hz
Correct Option: C  [ 20 to 20,000 Hz ]

Remark:

Insulin is used in the treatment of

• Diabetes
• Anaemia
• Night Blindness
• Goitre
Correct Option: A  [ Diabetes ]

Remark: