Which is the hardest substance in the human body?

A: Skull

B: Tooth enamel

C: Knee cap

D: Rib

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Tooth enamel

Soap and detergents remove the dirt from clothes due to_____?

A: Capillary action

B: Osmosis

C: Lowering of interfacial tension

D: Diffusion

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Lowering of interfacial tension

Deficiency of vitamin B1 is causes_____?

A: Bone Infection

B: Rickets

C: Beriberi

D: Myopia

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Beriberi

What amount of fats give energy of 9.3 K Calories?

A: 1.0 gram

B: 0.5 gram

C: 2.0 gram

D: 4.1 gram

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1.0 gram

Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ___?

A: Convection

B: Conduction

C: Radiation

D: Reflection

E: None of these

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Radiation

ECG is used for the diagnosis of aliments of ?

A: Heart

B: Brain

C: Kidneys

D: Lungs

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Heart

Barnacles growing on the back of whale is an example for ______?

A: parasitism

B: mutualism

C: amensalism

D: commensalism

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commensalism

Pollutants that are introduced into the environment by human activity are called as ______?

A: Quantitative pollutants

B: Qualitative pollutants

C: Anthropogenic pollutant

D: All of Above

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Anthropogenic pollutant

Serum if blood plasma minus its?

A: Clotting proteins

B: Calcium ions

C: Globulins

D: none

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Clotting proteins

The point that lies directly above the source of an earthquake is known as _____ ?

A: Epicenter

B: Earthquake Center

C: Gravitational Center

D: Geological Center

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Epicenter

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