Question # 1

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

Which of the following is directly related to Qualitative analysis?

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Identification

Separation

Measurement

Calculation

Which of the following belongs to the halogen family?

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Francium

Polonium

Radium

Astatine

For the carbylamine reaction we need hot alc. KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Sodium metal cannot be stored under

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Benzene

Kerosene oil

Alcohol

Toluene

Which of the following is different from the other three oxides?

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MgO

SnO

ZnO

Cr₂O₃

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

Which one is the property of an ideal solvent?

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Should be expensive

It should react chemically with the solute

Impurities should crystallize along with the solute

Should be safe to use

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

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1-Propanol

2-Propanol

2-Methyl2-Proponal

Ethanol.

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

A solution of sodium sulphate was electrolysed using some inert electrodes. The products at the electrodes are

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O_2,H₂

O_2,Na

O_2,SO₂

O_2,S_2O^2-₈

In public urinals, we observe some nascent smell. This smell is due to

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Hydrolysis of urea of urine by urease of atmosphere into NH₃and CO₂

Formation of sulphonic acid by urea of urine

Reaction of CO₂of atmosphere with urea mononitrate in urine

Hydregen present in air reacts with nitrogen forming NH₃

The acid used in lead storage cells is

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Phosphoric acid

Nitric acid

Sulphuric acid

Hydrochloric acid

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

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Sc³⁺

Ti³⁺

Cu⁺

Zn²⁺

BiCl₃on hydrolysis forms a white precipitate of

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Bismuthio acid

Bismuth oxychloride

Bismuth pentachloride

Bismuth hydroxide.

In a crystal a≠b≠c, a =γ= 90° andβ≠90°. It is

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Monoclinic

Rhombic

Trigonal

Tetragonal

Which has largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

Which of the following is monoatomic?

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Oxygen

Neon

Fluorine

Nitrogen.

Water (H_2O) is liquid while hydrogen sulphide (H₂S) is a gas because

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Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphure has high electronegativity than oxygen

Water molecules associate through hydrogen

The carbon atoms in calcium carbide are held by

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Ionic bonds

Sigma bonds

2 covalent, one co-ordinate bond

2π and oneα bond

Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

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Their metallic character decreases

The stability of +2 oxidation state increases

Their ionization energy increases

Their atomic size decreases

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