In organic farming:

• intercropping is not used
• manures are not used
• biofertilizers are not used
• chemical fertilizers are not used
Correct Option: D  [ chemical fertilizers are not used ]

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:

Which quantity is increased in step-down transformer?

• Voltage
• Current
• Wattage
• Frequency
Correct Option: B  [ Current ]

Remark: a step-down transformer the voltage is stepped down, or reduced, and the current is increased.

Which of the following is a ripening hormone?

• GA-3
• Auxin
• Cytokinin
• Ethylene
Correct Option: D  [ Ethylene ]

Remark: Ethylene is used for the controlled ripening of citrus fruits, tomatoes, bananas and many other fruits, vegetables and flowers.

Penicillin was invented by:

• Christian Bernard
• Alexander Fleming
• Mc Collum
• William Harvey
Correct Option: B  [ Alexander Fleming ]

Remark:

Which of the following is not a nucleon?

• proton
• neutron
• electron
• positron
Correct Option: D  [ positron ]

Remark:

Which of the following is not a property of acids ?

• All acids have sour taste
• All acids are corrosive in nature
• For acidic solutions pH = <7
• Acids tum red litmus to blue
Correct Option: D  [ Acids tum red litmus to blue ]

Remark:

Every computer connected to the internet is identified by a unique four-part strings known as:

• IP Address
• Domain name
• Host Address
• None of these
Correct Option: A  [ IP Address ]

Remark:

Minamata disease in Japan was caused due to pollution of water by :

• Lead
• Mercury
• Cyanide
• Arsenic
Correct Option: B  [ Mercury ]

Remark:

Mesons are found in

• Laser beam
• X-ray
• Gamma rays
• Cosmic rays
Correct Option: D  [ Cosmic rays ]

Remark: