Question # 1

A gas is heated in a closed vessel. Which of the following statement is not true for the gas?

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the intermolecular forces between particles weaken

the kinetic energy of particles increases

the total internal energy of the gas remains constant

the total internal energy of the gas increases

Amino acids are building material of:

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lipids

protein

carbohydrates

fats

Water in swimming pools is purified by adding

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Sodium

Chlorine

Phosphorus

Potassium

The degree of unsaturation in fats or oils is usually measured by numbers of grams of iodine required by 100 grams of fat, this is called

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oil number

saturation number

iodine number

un saturation number

Which of the following liquid has higher boiling point?

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HCl

HBr

H₂O

Br₂

Starch gives ________ color with iodine:

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blue

red

yellow

green

Soil remediation means

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to make it suitable for cultivation of crops

to make it acidic

to make it alkeline

to add manure into it

Which of these polymers is an addition polymer

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Nylon 6, 6

Polystyrene

Terylene

Epoxy resin

Identify the linear polymer out of following

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Amylose

Amylopectin

Starch

Glycogen

Active sulphonating agent during sulphonation of benzene is

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SO2

SO3

SO3H

SO3+

RNA regulate the synthesis of

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Vitamis

Carbohydrate

Proteins

Lipids

[Cu[NH₃)₄]⁺²will form ______ structure

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Square planar

Tetrahedral

Octahedral

Trigonal bipyramidal

Acetamide is

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Highly acidic

Highly basic

Neutral

amphoteric

Protein may have

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Primary structure

Secondary structure

Tertiary structure

All of these

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

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Eyes

Ears

Stomach

Nose

On passing HCI gas through a saturated solution of commercial sodium chloride, pure crystals of NaCI are precipitated due to

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Increase in pH of the solution

Decrease in pH of the solution

Common ion effect

Increase in ionization of NaCl

Sulphur dioxide affects

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Cell wall

Plasmodesmata

All membrane systems

Nucleus

The quantum number which describes the shape of the orbital is

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Principle quantum number

Spin quantum number

Azimathal quantum number

Magnetic quantum number

The reaction between primary amine-chloroform and alcoholic caustic potash is called

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Wurtz reaction

Frankland reaction

Cannizzaro's reaction

Carbylamine reaction

Which three elements are needed for the healthy growth of plants

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N, S, P

N, Ca, P

N, P, K

N, K, C

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

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2 - 4 ppm

4 - 6 ppm

2 - 5 ppm

4 - 8 ppm

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300 cm³

200 cm³

150 cm³

100 cm³

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