An alternating current instead of direct current is used in long-distance electric transmission because:

• it is easy to generate
• rectification is possible
• energy losses are minimum
• it causes fewer accidents
Correct Option: C  [ energy losses are minimum ]

Remark:

What is the purpose of 'Anemometer'?

• To measure blood pressure.
• To measure the velocity and to find the direction of wind.
• To measure altitude.
• none of these.
Correct Option: B  [ To measure the velocity and to find the direction of wind. ]

Remark:

Nitrogen is an essential constituent of all:

• Carbohydrates
• Fats
• Proteins
• Vitamins
Correct Option: C  [ Proteins ]

Remark:

Which of the following compounds is used in fire extinguishers ?

• Sodium carbonate
• Sodium bicarbonate
• Sodium nitrate
• Sodium sulphate
Correct Option: B  [ Sodium bicarbonate ]

Remark:

In the eye colour vision is effected by the presence of

• Rods
• Choroid coat
• Cones
• Sclerotic coat
Correct Option: C  [ Cones ]

Remark:

The only snake that builds its nest is:

• Krait
• King cobra
• Chain viper
• Saw scaled viper
Correct Option: B  [ King cobra ]

Remark:

A device that is responsible for changing the voltage is:

• Transformer
• Encoder
• Decoder
• Translator
Correct Option: A  [ Transformer ]

Remark:

Indian Space Research Organisation (ISRO) is located in :

• Bombay
• Hyderabad
• Bangalore
• Trombay
Correct Option: C  [ Bangalore ]

Remark:

What is the temperature when density of water is the highest

• 5 degree Celsius
• 6 degree Celsius
• 4 degree Celsius
• 3 degree Celsius
Correct Option: C  [ 4 Degree Celsius ]

Remark:

The largest gland of human body is :

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

Remark: