Which kind of lens is used in microscope ?

• Convex
• Concave
• Biconvex and concave
• Biconcave
Correct Option: A  [ Convex ]

Remark:

In a society the growth and development that meets the current human needs and also conserves natural resources for future generations is known as:

• Green economy
• Holistic development
• Sustainable development
• Subsistence agriculture
Correct Option: C  [ Sustainable development ]

Remark:

The "powerhouse" of cell is:

• Nucleus
• Lysosome
• Mitochondria
• DNA
Correct Option: C  [ Mitochondria ]

Remark: Mitochondria are membrane-bound cell organelles that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

Ocean thermal energy is due to:

• tides in the ocean
• pressure difference at different levels in the ocean
• temperature difference at different levels in the ocean
• energy stored by waves in the ocean
Correct Option: C  [ temperature difference at different levels in the ocean ]

Remark:

Which of the following blood group is considered as Universal Donor ?

• A
• AB
• B
• O
Correct Option: D  [ O ]

Remark:

Quality of petrol is expressed in:

• Gold number
• Cetane number
• Methane number
• Octane number
Correct Option: D  [ Octane number ]

Remark:

What is the other name for Vitamin B₂ ?

• Haemoglobin
• Dextrose
• Thiamine
• Riboflavin
Correct Option: D  [ Riboflavin ]

Remark:

Which of the following statements is not correct ?

• Silver Revolution refers to increased pulse production.
• White Revolution refers to increased milk production.
• Green Revolution refers to increased production of food grains.
• Yellow Revolution refers to increased oil-seed production.
Correct Option: A  [ Silver Revolution refers to increased pulse production. ]

Remark:

Which of the following branch deals with the various principles that govern the relationship between organisms and their environment?

• Histology
• Ecology
• Entomology
• Anthropology
Correct Option: B  [ Ecology ]

Remark:

One kilometre is equal to how many miles?

• 0.84
• 0.5
• 1.6
• 0.62
Correct Option: D  [ 0.62 ]

Remark: