Question # 1

The color of ppts formed by Fehling's test is

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Brick red

Red

Yellow

Orange

If 18 g glucose (C₆H₁₂C₆) is present in 1000 g of an aqueous of glucose it is said to be

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1 molal

1.1 molal

0.5 molal

0.1 molal

The colour of transition metal complexes is due to

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d-d transitions of electrons

Para magnetic nature of transition elements

Ionization

Loss of s-electrons

The polymers which can be re-softened again and again are caled

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Thermoplastic

Thermosetting

Both a and b

None

Which of the following derivative cannot be prepared directly from acetic acid?

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Acetamide

Acetyl chloride

Ethyl acetate

Acetic acid

The substance which contains the water of crystallization is called

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Hydrated

Solvated

Crystal

None

A certain current liberate 0.5 g of hydrogen in 2 h. How many grams of copper can be liberated by the same time in a copper sulphate solution?

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12.7 gm

15.9 gm

31.8 gm

63.5 gm

Palmitic acid & steanic acid ae obtained from process of fats & oils:

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Reduction

Neutralization

oxidation

hydrolysis

An organic compound, on treatment with Br2 in CC14 gives bromoderivative of an alkene. The compound will be

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CH3 - CH = Ch2

CH3CH = CHCH3

HC = CH

H2C = CH2

Compound X has molecular formula C₁₀H₁₄O and is unreactive towards mild oxidising agents. What is the structure of the compound formed by dehydration of X

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Which of the following is commonly called polyamide

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Nylon

Rayon

Terylene

Oridon

C- X bond is strong in

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CH₃Cl

CH₃Br

CH₃F

CH₃I

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a

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Fibre

Plastic

Varnish

Polyamide resin

type of hybridization in CH≡CH is:

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sp

sp²

sp³

dsp²

Carboxyl group has functional group in it:

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One

Two

Three

Four

A limiting reactant is the one which

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Is taken in lesser quantity in grams as compared to other reactants

Is taken in lesser quantity in volume as compared to other reactants

Gives the maximum amount of the product which is required

Gives the minimum amount of the product under consideration

CL₂, N₂ and O_{2 are:}

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Diatomic molecules

Hetero atomic molecules

Poly-atomic molecules

Mono-atomic molecules

Glucose in the presence of zymase is converted into

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Alcohol

Acid

Ethyl alcohol

Ketone

One of the following statements is incorrect

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Actual yeild is always less than the theoretical yield

The formula of a compound is not definite

Law of conservation of mass is applied in stoictiometry

Boyles law is applied in stoichiometry

Which of the following mixture of liquids show negative deviation form Raults law

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Ethyl alcohol and ether

HCI and water

Phenol- water

Chlorobenene-bromobenene

Which of the following posses linear geometry

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Alkane

Alkene

Alkyne

Benzene

Which of the following in incorrect?

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FelCl₃is used in the detection of phenols

Fehling solution is used in the detection of glucose

Tollen's reagent is used in detection of unsaturation

NaHSO₃is used in the detection of carbonyl compounds

Ethyl alcohol is industrially prepared from ethylene by

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permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄followed by hydrolysis

Fermentation

Fatty acids are:

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Allphatic monocarboxylic acids

Dicaroxylic acids

Tricarboxylic acids

Tetracarboxylic acids

Poly carboxylic acids

The limiting line of Blamer series in hydrogen spectrum lies in

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Visible regions

Ultraviolet region

Infrared region

x-rays region

The example of a photo chemical reaction is photosynthesis has order of reaction :

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1

2

0

3

The number of atoms or molecules whose concentrations determine the rate of the reaction is called

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Molecularity

Order

Rate of reaction

Rate constant

In which of the following cases, the reaction goes farthest to completion

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K = 10³

K = 10^-2

K = 10

K = 10⁰

Which is the correct electronic configuration of Cr - 24

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1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁴, 4s²

1s², 2s², 2p⁶, 3s², 3p⁶, 3d³, 4s², 4p¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4s¹

1s², 2s², 2p⁶, 3s², 3p⁶, 3d⁵, 4p¹

A compound used as eye wash:

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Borax

Boric acid

Metabolic acid

Pyroboric acid

Phenol is a weak acid. The correct order of acid strength of carboxylic acid, phenol and alcohol is

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Carboxylic acid > phenol > alcohol

Carboxylic acid > alcohol > phenol

Phenol > carboxylic acid > alcohol

Alcohol > phenol > carboxylic acid

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