Question # 1

During a chemical reaction, total mass of the product is equal to the total mass of reactants, this is a statements of.

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Law of conservation of momentum

Law of conservation of energy

Law of conseration of mass

Law of conseration of acceleration

The last stage in the life of massive star is

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Red Gaint

White dwarf

Super Giant

Black hole

A relationship where two species live togetehr closely is called.

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Mutualism

Commensalism

Symbiosis

Hebitate

The weight of brain of an adult main is.

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1.5 kg

2.0 kg

2.5 kg

3.0 kg

There are ......... types of reflection

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2

3

4

5

A student pushes against a tree with a force of 10 newtons. The tree does not move. What is the amount of force exerted by the treen on the student.

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0

5 N

10 N

20 N

DNA is called.......... material.

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Hereditary

Plasma

Meiotic

Chromatic

Telescope on the Earth suffers from the defect that light coming from the stars has to pass through.

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Space

Water

Atmosphere

Clouds

An electric current in a conductor is ude to the flow of.

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Positive ions

Negative ions

Positive charge

Free electrons

The characters which are passed from parents to off spring.

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Environmental characters.

Naturla characters

Non -inheritable characters.

Hereditary characters.

Hydrogen and nitogen are used for teh manufacturing of.

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Benaspati ghee

Oxygen cylinder

Hydrogen flame

Urea

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