Question # 1

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

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The amount of Ni in stainless steel is

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3%

4%

5%

8%

The common name of propanoic acid is

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Acetic acid

Formic acid

Propionic acid

Butyric acid

From the following values of dissociation constants of four acids which value represents the strongest acid?

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2 x 10^-2

0.02 x 10^-1

3 x 10^-4

2 x 10^-4

Which is the transition element among the following

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B

Al

Cu

Cs

I a chemical reaction equilibrium is said to have been established when :

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Rate of opposing reactions are equal.

Rate constants of opposing reactions are equal.

Opposing reactions stop.

Concentration of reactants and products are equal

Sodium can be obtained by :

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Electrolysis of acidified water.

By heating NaCl and water at 100°

Electrolysis of molten sodium chloride.

Electrolysis of aqueous sodium chloride.

Which of the following is most electronegative?

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Carbon

Silicon

Lead

Tin

What is the molarity of H₂SO₄solution that has density of 1.84 gm/cc at 35°C and contains 98% by weight?

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4.18 M

8.14 M

18.4 M

18 M

Acetic acid is manufactured by the fermentation of

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Ethanol

Methanol

Ethanal

Methanal

The covalent radius of Cl atom is:

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99.4 pm.

176.7 pm

38 pm

76 pm.

In macromolecules DP stands for

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Dissociation parameter

Dissociation polymer

Degree of polymerization

None of these

Na reacts with phenol to produce

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H₂gas

Benzene

CO₂gas

CO gas

In electrolysis of NaCl when Pt electrode is taken then H₂is liberated at cathode while with Hg cathode it forms sodium amalgam

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Hg is more inert than Pt

More voltage is required to deduce H⁺at Hg than Pt

Na is dissolved in Hg while it does not dissolve in Pt

Conc. of H⁺ions is larger when Pt electrode is taken

SO₂Makes ______ acid rains

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Carbonic acid

Sulfuric

Nitric acid

All of these

Ethanol containing some methanol is called

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Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

Gradual addition of electronic shells in the nobel gases causes a decrease in their

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Ionization energy

Atomic radius

Boiling point

Density

Of the given alkali metals, the one with smallest size is

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Rb

Cs

K

Na

Which element among the following belongs to Group IV-A of the periodic table?

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Barium

Iodine

Lead

Oxygen

Select from the following the one which alcohol

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Which one of the following solution will have higher vapour pressure than that of water

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Aqueous solution of methanol

Aqueous solution of HCI

Aqueous solution of glucose

Aqueous solution of urea

Hydrogenation of vegetable oils is accelerated by Ni catalyst. The catalytic activity of Bi is increased by a promoter of activator which is

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Na and K

Na and Hg

Hg and Zn

Cu and Te

Synthesis of rubber is made by polymerization of

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Chloroform

Acetylene

Divinylacetylene

Butene

The carbon of a carbonyl group is:

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sp hybridized

sp²hybridized

sp³Hybidized

None of these

Which of the following statements is true about Galvanic cell

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Anode is negatively charged

Reduction occurs at anode

Cathode is positively charge

Reduction occurs at cathode

In the chemical combination of sodium and hydrogen to form NaH:

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Hydrogen atom gains an electron.

Sodium atom gains an electron.

Both the atoms share the electron.

The reaction in which ketone is reduced to the alkane is called

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Kolb

Clemmensen

Cannizzaro

None

The detection of functional group is called :

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Numerical analysis.

Qualitative analysis.

Combustion analysis.

Quantitative analysis.

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-778.9 KJ

788.0 KJ

-1.9 KJ

+1.9 KJ

Molarity of pure water is :

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33.3

55.5

44.4

66.6

Ammonia like water also reacts with Grignard's reagent to give

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Alkane

Alkene

Alkyne

Amide

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