Question # 1

The process by which water rises up from the roots of plants to leaves is called.

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Photosynthesis

Respiration

Surface tension

Capillary action

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

Oxidation of Ethene with KMnO₄ produces.

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Oxalic acid

Glyoxal

Ethene Glycol

Propene glycol

Dilute acid react with carbonates the produce product except _________

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Salt

Water

Carbon di oxide

Hydrogen gases

Glucose and fructose are.

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Pentose

Triose

Hexoses

None of these

At the height 880120 km from earth's surface is.

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Troposphere

Mesosphere

Stratosphere

Thermosphere

Open chain compounds are also called:

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aliphatic compounds

alicyclic compounds

aromatic compounds

hydrocarbons

Eggs oils and fats contain vitamin .

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A

B

C

D

A base is a substance which neutralizes an acid which of these substances is not a base?

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Aqueous ammonia

Sodium chloride

Sodium Hydroxide

Calcium Hydroxide

One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What formula could be of the X.

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C₃H₈

C₆H₁₂

C₄H₁₀

C₇H₁₆

The colour of litmus in a strong basic solution become.

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Yellow

Blue

Red

Colourless

Hypoglycemia result due to:

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high cholesterol level

low cholesterol level

low sugar level in body

high sugar level in body

We exhale gas in the atmosphere during respiration.

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Carbon dioxide

Oxygen

Nitrogen

Water

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