Question # 1

The reaction in which the products can recombine to form reactants are called.

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Reversible reaction

Irreversible reaction

Decomposition

Addition

Cause of Night blindness is.

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Deficiency of vitamin B

Deficiency of vitamin A

Deficiency of vitamin D

Deficiency of vitamin E

When the magnitude of Kc is very small it indicates.

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Equilibrium will never establish

All reactants will be converted to products.

Reaction will go to completion

The amount of products is negligible

Alkanes do not react in

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Diffused sunlight

Dark

Bright sunlight

None of these

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

Vital force theory was rejected by.

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Jabir Bin Hayan

Drawin

Wohler

Berzellius

Uric Acid is present in

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Apple

Fats

Urine

Grapes

Traces of acetylene are present to coal gas about.

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0.06 %

0.08%

1.1 %

90%

Matte is a mixture of:

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FeS and CuS

Cu₂O and FeO

Cu₂S and FeS

CuS and FeO

Pentahydroxy ketone is called as:

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Glucose

Fructose

Starch

Sucross

75% atmosphere mass lies in how many kilometers.

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11 km

30 km

50 km

85 km

Dehydration of alcohols can be carried out with.

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NaOH

KOH

H₂SO₄

HCl

Ethylene glycol can be prepared with the reaction of KMnO₄ and _____

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CH = CH

CH₃ - CH₃

CH₃CH₂CH₃

CH₂= CH₃

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