Question # 1

A yellow solid element exists in allotropic forms whic is also present in fossil fuel. Indicate the name

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Iodine

Carbon

Sulphur

Aluminium

What information was obtained fom discharge tube expriments?

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Electrons and protons were discovered

Structur eof atom was discovered

Neutrons and protons were discovered

Presence of nucleus in an atom was discovered

Which among of the followign has a double covalent bond.

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Ethane

Methane

Acetylene

Ethylene

Which of the following element belong to VIII A.

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Xe

Mg

Br

Na

Which of the following does not happpen, when a system is at equilibrium state.

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Reaction continues to occur in both the directions

Concentration of reactants and products stop changig

Forward and reverse reactions stop

Forward and reverse rates become equal

Which branch of chemistry tells us sulphuric acid is extremely corrosive to skin.

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Organic chemistry

Physical chemistry

Inorganic chemistry

Biochemistry

Atomic number is represented by

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P

A

At

Z

Which of the following is Bronsted base?

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HCl

CH3COOH

H2O

NH3

During the glycolysis net ATP produced are.

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2

4

6

8

Which acid is not used as a food or mixed with food?

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Tartaric Acid

Formic Acid

Ascorbic acid

Citric Acid

Which isotope is used in nuclear reactors.

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U-234

U-235

U-238

All of these

Malleability is the property by virtue of which a metal can be drawn into.

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Rods

Plates

Sheets

Wires

Diamond is...................

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conductor

non -conductor

both a and b

None of these

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