Question # 1

The element which is not present in all proteins is

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C

H

O

S

Which one of the following is a water soluble vitamin?

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niacin

rioflavin

trypsin

ascorobic acid

Potency and turn over are terms related to:

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enzymes

proteins

fats

oils

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

Pressure of 1Nm^-2 is equal to

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One bar

1 psi

One pascal

One atmosphere

Structure of CrO4(-2) is'

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triclinic

cubic

octahedral

tetrahedral

The solid particles posses only ______ kinetic energy

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Translational

Rotational

Viberational

Circular

The pH range of acid rain is?

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7-6.5

6.5-6

6-5.6

Less than 5

A student mixed ethyl alcohol with small amount of sodium dichromate and added it to the hot solution of dilute sulphuric acid. A vigorous reaction took place. He distilled the product formed immediately. What was the product?

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Aceton3

Dimethyi ether

Acetic acid

Acetaldehyde

Enthalpy of neutralization (∆H°n) per mole of H2SO4/ Ba(OH)2 is

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+57.4 kJmol-1

-114.8 kJmol-1

-57.4 kJmol-1

The unit of pressure ______ is commonly used by meteorologists

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mm of Hg

Kilopascal

Millibar

Pound per square inch

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2-chlorobutanal

alfa-chlorobutanal

2-chlorobutyraldehyde

alfa- chlorobutyraldehyde

The energy of the system and surrounding is conserved. This is a statement of

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Law of mass action

Law of definite proportion

Law of conservation of energy

Second law of thermodynamics

Which if the following has the highest freezing point at one atmosphere

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0.1 M NaCI

0.1 M sugar solution

0.1 M BaCI₂

0.1 M FeCI₂solution

Which of the following is a water soluble vetamin?

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Niacin

Riboflavin

Trypsin

Ascorbic acid

C₁₈and onward hydrocarbons are normally

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Gases

Liquids

Solids

Plasma

The final product formed by distilling ethyl alcohol with excess of Cl₂and Ca(OH)₂is

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CH₃CHO

CCl₃CHO

CHCl₃

(CH₃)₂O

Le-chatlier's principle is applied on the reversible reaction in order to

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Determine the rate of reaction

Predict the direction of reaction

Determine the extent of reaction

Find best conditions for favorable shifting the position of equilibrium

Which of the following does not exhibit the periodicity in properties of the elements?

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Ionisation energy

N/P ratio

Electronegativity

Atomic radius

The order of reactivity of halogen acids for reaction with C₂H₅OH is

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HCl > HBr > HI

HI > HBr > HCl

HBr > HI > HCl

HBr > HCl > HI

When the 6d orbital is completed the entering electron goes into

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7f

7 s

7 p

7 d

The optimum conditions of temperature and pressure to get maximum NH₃form N₂and H₂gases is

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2000°C and 10 atmosphere

0°C and 1 atmosphere

400°C and 200-300 atmosphere

200°C and 100 atmosphere

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