Silviculture is the management of :

• Rivers
• Lakes
• Hills
• Forests
Correct Option: D  [ Forests ]

Remark:

The branch of medical science that deals with diseases and problems specific to old people is:

• Cytology
• Geology
• Gerontology
• Zoology
Correct Option: C  [ Gerontology ]

Remark:

All ships have sonar system. It is used to detect /measure :

• Distance of the shore
• Sound on the surface
• Sound of animals in Sea
• Depth of ocean
Correct Option: D  [ Depth of ocean ]

Remark:

Kidney disease in man is caused by the pollutant

• Cadmium
• Iron
• Cobalt
• Carbon
Correct Option: A  [ Cadmium ]

Remark:

What chemicals are used in fire extinguishers used in houses and offices ?

• Water, potassium bicarbonate and fluorocarbon
• Water, calcium hydroxide and chlorofluorocarbons
• Water, potassium hydroxide and chlorobenzene
• None of these
Correct Option: A  [ Water, potassium bicarbonate and fluorocarbon ]

Remark:

The largest gland of human body is :

• Thyroid
• Kidney
• Pancreas
• Liver
Correct Option: D  [ Liver ]

Remark:

Which of the following is not a renewable source of energy ?

• Natural gas
• Geothermal energy
• Flowing water
• Biomass
Correct Option: A  [ Natural gas ]

Remark:

Generally, non-metals do not conduct electricity. Which of the following conducts electricity?

• Diamond
• Graphite
• Sulfur
• Fullerene
Correct Option: B  [ Graphite ]

Remark:

Which among the following elements increases the absorption of water and calcium in plants ?

• Manganese
• Boron
• Copper
• Molybdenum
Correct Option: B  [ Boron ]

Remark:

In India which is the most widely used form of renewable energy ?

• Geothermal energy
• Hydro-electric energy
• Solar energy
• Thermal energy
Correct Option: C  [ Solar energy ]

Remark: