Question # 1

The formula of nitre is

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KNO₃

NANO₂

NaCl

Na₂CO₃

Fluorine does not show positive oxidation states due to the absence of

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d-orbitals

s-orbitals

p-orbitals

None

The essential component of organic compound is

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O

C

P

N

Which of the following transition metal ions will have definite value of magnetic moment?

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Sc³⁺

Ti³⁺

Cu⁺

Zn²⁺

The formula to calcium cyanamide is

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Ca(CN)₂

CaC_2N

CaNCN

CaCHNH₂

The symbol of the element whose atoms have the outer most electronic configuration 2s²sp³is

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N

Li

P

Na

Carbon atom holding halogen in aryl halides is

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sp²-hybridesed

sp³-hybridesed

sp-hybridesed

sp³d-hybridesed

Natural fertilizer provides potassium in the form of K₂O (potash)

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1.5 kg

3 kg

4.5 kg

6.5 kg

Portland cement is manufactured by using

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Limestone, clay and sand

Limestone, gypsum and sand

Limestone, gypsum and alumina

Limestone, clay and gypsum

The kinetic theory of gases predicts that total kinetic energy of a gaseous assemble depends on

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Pressure of the gas

Temperature of the gas

Volume of the gas

Pressure, temperature, and volume of the gas.

Which of the following geometry is associated with the compound in which the central atom assumes sp³d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

The order of reactivity of halogens in aliphatic substitution reactions is

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Br2 > C12 > F2

Cl2 > Br2 > F2

Cl2 C12 > Br2

F2 > Br2 > C12

Heating a mixture of sodium benzoate and soda lime gives

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Methane

Benzene

Sodium benzoate

Calcium benzoate

Ethyl chloride on treatment with aqueous alkali gives

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Ethane

Ethene

Ethanal

Ethanol

Phenol is heated with CCl₄and alkaline KOH when salicylic acid is produced. The reaction is known as

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Frledel-Craft reaction

Riemer-Tiemann's reaction

Rosenmund's reaction

Sommelet reaction

In the manufacture of iron from haematite, limestone is added to act as.

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Flux

A reducing agent

Slag

An oxidizing agent

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