Question # 1

Poly hydroxyl compounds of aldehyde and ketones are?

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Carbohydrates

Proteins

Fats

Lipids

Which of the following air pollutant is called quiet killer

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PAN

CO

NO₃

SO₃

Which of the following is not a category of proteins based upon their function?

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genetic

Regulatory

nucleo

structural

All amino acids are optically active except

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Amino acid

Series

Threonine

Tryltophan

^{Reaction of ethyl bromide with ammonia}

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Completes in a single step

Completes in two steps

Continues till N is left with no lone pair

is reversible

Which one of the following is not air pollutant gas

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CO

CO₂

NO

SO₂

In esterification, the OH of carboxylic acid is replaced by

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OR+

R+

OR

R

Matter having no definite shape and volume is called:

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gas

liquid

solid

plasma

Which of the following solids has a simple molecular lattice?

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magnesium oxide

sodium

silicon(IV) oxide

sulphur

Kerosene is liquid at room temperature.This is due to:

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organic nature

H-bonding

molecular size

dipole-dipole forces

Considering the physical properties of the gases, which of the following statements about particles of gas is not true. The particles

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orderly arranged

randomly moving

having wide spaces

causing pressure

Ethanol is prepared in Pakistan form fermentation of:

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Starch

Sugar

Glucose

Molasses

Reaction of Grignard's reagent with formaldehyde gives:

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pri-alcohol

sec-alcohol

ter-alcohol

carboxylic

Which of the following statements about acetic, anhydride is not correct

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It is immiscible with water but is hydrolysed to give acetic acid

It is prepared by the action of actyl chloride on the sodium salt of acetic acid

it reacts with ammonia to give acetamide

it is a strong acid

Hybridized in carbon is:

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sp

sp²

sp³

d²sp

Which of the following elements have the largest radius

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F

Cl

Br

l

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

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0.1

0.01

0.2

0.0196

Ozone layer of stratosphere requires protection from indiscriminate use of

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Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Baloons and turbo-prop aeroplanes

All are ortho & Para directing except

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X

OH

NR₃

NH₂

The standard EMF of Daniel cell is 1.10 volt. The maximum electrical work obtained from the Daniel cell is

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212.3 kJ

175.4 kJ

106.15 kJ

53.07 kJ

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When acetic acid and ethanol react together an ester is formed which is called

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Ethyl ester

Ethanoic acid

Ethyl acetate

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