Who created periodic table?

A: Lavoisier

B: Faraday

C: Arrhenius

D: Mendeleev

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Mendeleev

Dental mirror is what type of a mirror?

A: Concave mirror

B: Convex mirror

C: Plane mirror

D: none of these

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Concave mirror

The process of splitting water molecules in the presence of light energy is called____?

A: Photolysis

B: Electrolysis

C: Radiolysis

D: Thermolysis

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Photolysis

Which one of the following is not vector quantity __?

A: Displacement

B: Acceleration

C: Speed

D: Force

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Speed

who invented bulb?

A: Robert

B: Philips

C: Edison

D: Willium

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Edison

Bauxite is an ore of____?

A: zinc

B: copper

C: aluminium

D: iron

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aluminium

Example of gas having monoatomic molecules is ______ ?

A: Nydrogen

B: Nitrogen

C: Neon and argon

D: Oxygen and nitrogen

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Neon and argon

A ‘breath test’ used by traffic police to check drunken driving uses ____?

A: Silica gel coated with silver nitrate

B: Turmeric on filter paper

C: potassium permanganate-sulphuric acid

D: Potassium dichromatic-sulphuric acid

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Potassium dichromatic-sulphuric acid

Which of the following is the hardest substance?

A: Diamond

B: Copper

C: Iron

D: Silicon

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Diamond

The lifespan of White Blood Cells is _____ day(s)?

A: 3 - 7 days

B: 1 - 5 days

C: 4 - 8 days

D: 5 - 21 days

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5 - 21 days

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