Question # 1

What happens when reaction is at equilibrium and more reactant is added :

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Forward reaction rate is increased.

Forward reaction rate is decreased.

Backward reaction rate is increased.

Equilibrium remains unchanged.

Which of the following is acidic?

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SO₃

N₂O

BeO

HgO

Which one of the following statements of glucose and sucrose is incorrect?

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Both are soluble in water

Both are naturally occuring

Both are carbohydrates

Both are disaccharides

The rate determining step is the :

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Slowest step.

Fastest step.

Moderate step.

Both (a) and (b).

Which of the following species has the highest ionization potential?

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Ne

Al⁺

Mg⁺

Li⁺

Which one of the following metal ions is colourless?

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V²⁺

Cr³⁺

Zn²⁺

Ti³⁺

Formula of acetone is:

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HCHO

CH₃CHO

CH₃OCH₃

CH₃OC₂H₅

The number of elements in the 4th periods of periodic table is

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8

10

18

32

According to Mendleev, the physical and the chemical properties are the periodic function of their

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Atomic number

Atomic mass

Atomic wt

None

Benzene hexachloride is used as

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Dye

Antimaterial drug

Antibiotic

Insecticide

When propanamide reacts with Br₂and NaOH then which of the following compounds is formed?

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Ethyl alcohol

Propyl alcohol

Propyl amine

Ethylamine

Which of the following statements is not true?

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Isotopes with even atomic masses are comparatively abundant

Isotopes with even atomic masses and even atomic numbers are comparatively abundant

Isotopes with even atomic masses and odd atomic number are comparatively abundant

ph of the buffer CH₃COOh + CH₃COONa is 3.76. If the mixture contains 1 molar acetic acid and 0.1 molar sodium acetate, then pKa of this buffer is

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3.76

4.76

5.76

6.76

Which of the following is lighter

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Li

k

Na

Ca

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

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3.0

2.7

2.0

1.5

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0 1

0 2

1 1

1 2

The general formula of amino acids is

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Cannizzaro reaction is not given by

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Trimethyl acetaldehyde

Acetaldehyde

Benzaldehyde

Formaldehyde

To differentiate isomers we use

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n-

iso-

neo

All of them

Grignard's reagent on treatment with dry CO₂and HCI yields

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Ester

Alcohol

Carboxylic acid

Aldehyde

In the ground state, an element has 13 electrons in its M shell. The element is

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Copper

Chromium

Nickel

Iron

Mustard gas is a

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Gas

High boiling speed

High melting liquid

Steam

The only alcohol that can be prepared by the indirect hydration of alkene is

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ethyl alcohol

propyl alcohol

isobutyl alcohol

methyl alcohol

I-Chloropropane has two isomers, it is an example of

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Chain isomerism

Position isomerism

Functional group isomerism

Metamerism

The statement that the properties of every eight elements are similar to the first is the law of

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Dobereiner

Newland

Mendeleev

L. Meyer

Number of isomers of butane are:

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One

Two

Three

Four

Wohler synthesized first of all the organic compound:

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Carbohydrates

Urea

Aniline

Toluene

The cathodic reaction in the electrolysis of dill H₂SO₄with Pt electrodes

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Reduction

Oxidation

Both oxidation and reduction

neither oxidation or reduction

The bond order for He₂molecule is

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zero

1/2

1

2

In KO₂the oxidation state of oxygen is

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-2

-1

+1/2

-1/2

Isotonic solutions have same

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Molar concentration

Molality

Normality

None of these

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