Question # 1

Poly hydroxyl compounds of aldehyde and ketones are?

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Carbohydrates

Proteins

Fats

Lipids

A pressure of 1Nm^-2 is equal to:

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one bar

one pascal

stalagmometer

one aomosphere

Which of the following test is not given by aldehvde

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2. 4 DNPH test

NaHSO3 test

Tollen's test

Sodium nitroprusside test

The Kw. of water at 25 C° is given by

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10(-7)

10(-10)

10(-12)

10(-14)

2-Propenol, on rearrangement, yields

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Propanal

Propanone

2-propano

Both A and B

Which one of the following elements is not present in all proteins?

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carbon

hydrogen

nitrogen

sulphur

Malt sugar is converted into glucose by an enzyme invertase present in yeast. The process is known as:

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dehydration

condensation

fermentation

oxidation

The geometry of diamonds is

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tetragonal

cubic

rhombohedral

none of these

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T₁= T₂= T₃

T₁< T₂< T₃

T₁> T₂> T₃

T₁> T₂= T₃

During incineration temperature range of non-rotating chamber is

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900-1000C°

650-1100C°

950-1300C°

700-900C°

Primary pollutant is that:

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Waste product of an industry

Which causes cancer

Whose concentration cannot be controlled

Which corrode the metal only

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The value of K_pfalls with rise in temperature

The value of K_pfalls with increasing pressure

Addition of V₂O₅catalyst increase the concentration of SO₃

The value of K_pis equal to K_c

How does the ionization energy of 1st group elements vary?

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Increases down the group

Decreases down the group

Remains unchanged

Variation is not regular

SN2 reaction can be best carried out with

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Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

All the three

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄or LiAIH₄?

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1-propanol

2-propanol

2-Methyl-2-propanol

Ethanol

In 1000 molecules of 0.001 M acetic acid the number of H⁺ions is 12.6, then its percentage of ionization is

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1.33%

1.26%

12.6

1%

The alkynides are used for the ----------- of alkynes

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Pxperation

Purification

Seperation

All of above

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3

4

5

2

Which one does not declourized KMnO₄

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Alkenes

Alkynes

Bezene

All above

What is the volume in cm³of 3.01 x 10²³molecules of O₂gas at S.T.P

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1000 cm³

11000 cm³

1120 cm³

11200 cm³

Potassium hexacyanoferrate (II) has the formula

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K₄[Fe(CN)₆]

K₃[Fe(CN)₆]

K₂[Fe(CN)₆]

K [Fe(CN)₆]

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

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