Question # 1

Carboxylic acids functional group is:

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----COOH

-----COH

----CO---

----OH

If pH of buffer of 1 mole dm^-3of HCOOH + 0.1 mole dm^-3HCOONa having pKa = 3.78 is

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1.78

2.78

3.78

4.78

The base used in Cannizzaro's reaction is

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NaOH

KOH

CHI₃

All of these

The term aromatic was derives from

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Greek word

Latin

Russian

English

The filtration process is used to separate solid from

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Liquid

Gas

Solid

All of above

The movement of solvent molecules through a semipermeable membrane is called

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Electrolysis

Electrophoresis

Osmosis

Cataphoresis

Which is a weak nucleophile

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OH^-

Br^-

NH₃

CI^-

Vegetables oils are:

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Essential oils obtained form plants

None of these

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Shift reaction toward forward direction

Shift reaction backward

Lower the value of K_c

No change in reaction

Coordination number of Pt in [PtCl (NO²) (NH³)⁴]^2-

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2^-

4

1

6

10% aqueous solution of NaCI has molarity

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1.7 M

2.7 M

0.17 M

3.7 M

Acetone is oxidized with

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Tollen's reagent

Fehling solution

Acidic dichromate solution

Benedicts solution

Metal tend to lose electrons, becoming:

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Metals

Positively charged

Negatively charged

(a)And (c)

For which mechanisms, the first step involved is the same:

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E₁ and E₂

E₂and SN₂

E₂ and E₁

E1 and SN₁

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250° C?

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Nitric oxide

Nitrous oxide

Nitrogen dioxide

Dinitrogen tetraoxide

Which of the following contains single bonds

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Benzene

Alkyne

Alkene

Alkane

The pH of 10^-3mole dm^-3of an aqueous solution of H₂SO₄is

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3.0

2.7

2.0

1.5

Cannizzzaro's reaction is not given by:

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Formaldehyde

Acetaldehyde

Benzaldehyde

Trimethyl

Dilatometric method is used for rate determination when

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Reactions involving change of optical

Reactions involving change of optical activity

Reactions involving small volume change

None of above

α-Amino acids are found in protein. Which of the following is anα-amino acid

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Size of an anion is increased as compared to its atom because of the

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Addition of new shell

Repulsion of electrons in the valence shell

Decrease in nuclear charge

Increase in the unclear charge

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Increases

Decreases

Remains same

Cannot be predicted

The electronic configuration of an atom/ion can be defined by the following

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Aufbau principle

Pauli's exclusion principle

Hund's Rule

All the above

Which of the following is a noble gas:

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Ne.

Cl₂.

H₂.

N₂.

Alcohols reacts with Grignard reagent to form

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Alkanes

Alkenes

Alkynes

All

CnH_2nis the general formula of

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Alkanes

alkynes

None of above

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2

3

4

9

Ethyl acetate is obtained when methyl magnesium iodide reacts with

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Ethyl formate

Ethyl choroformate

Acetyl chloride

carbondioxide

If 5.85 g of NaCl are dissolved in 90 g of water, the mole fraction of NaCl is

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0.1

0.01

0.2

0.0196

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1-bromobutane

2-bromobutane

1-bromo-2-methyl propane

2-bromo-2-methyl propane

SnCI₂have ______ shape

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Planner

Tetrahedral

Angular

None

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