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:

The primary producer in an ecosystem are:

• Bacteria
• Women
• Men
• Plants
Correct Option: D  [ Plants ]

Remark:

Isaac Newton invented:

• Thermometer
• Reflecting Telescope
• Hydraulic Accumulator
• Transistor
Correct Option: B  [ Reflecting Telescope ]

Remark:

The sex of a child before birth can be determined by:

• Amnoscopy
• Amniocentesis
• Amniograpghy
• None of these
Correct Option: B  [ Amniocentesis ]

Remark:

In coriander the useful parts are:

• roots &leaves
• leaves & flowers
• leaves & dried fruits
• flower& dried fruits
Correct Option: C  [ leaves & dried fruits ]

Remark:

__________ is the first missile developed in India.

• Agni
• Aakash
• Trishul
• Prithvi
Correct Option: D  [ Prithvi ]

Remark:

Plants absorb dissolved nitrates from soil and convert them into:

• free nitrogen
• urea
• ammonia
• proteins
Correct Option: C  [ ammonia ]

Remark:

The pale yellow colour of urine is due to the presence of which pigment?

• Urophyll
• Urochrome
• Chlorophyll
• Chloroplast
Correct Option: B  [ Urochrome ]

Remark:

The sky looks blue due to

• Dispersion of Sunlight
• Scattering of Sunlight
• Refraction of Sunlight
• None of these
Correct Option: B  [ Scattering of Sunlight ]

Remark: The scattering of sunlight is a phenomenon that occurs when sunlight interacts with particles or molecules in the Earth's atmosphere, causing the light to change direction and spread out in various directions.

In which year was the "@" chosen for its use in e-mail addresses?

• 1972
• 1976
• 1980
• 1984
Correct Option: A  [ 1972 ]

Remark: