Question # 1

The gecko a small lizard can up a smooth glass window the gecko has millions of microscopic hairs on its toes and each hair has thousand of pads at its tip the result is that the molecules in the pad are extremely close to the glass surface on which the gecko is climbing.

What is the attraction between the gecko is climbing.

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co-ordinate bonds

covalent bonds

ionic bonds

van der Waals forces

What is the weight of 10 litres of CO₂at 27°C and 2 atm?

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89.3 g

36.1 g

125 g

127 g

Alcohol is less acidie than phenol due to

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higher ka value

Instability of alkoxide ion

stability of carbocation

Stability of phenol

The deviation of a real gas from ideal behaviour is maximum at

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-10.0°C and 50 atm

-10°C and 2 atm

100°C and 2.0 atm

0°C and 2 atm

Residence time of methane in the atmosphere is

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3 - 7 days

2 -3 days

3 - 7 years

2 - 3 years

Which of the following carbohydrates is used in silvering of mirrors

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Sucrose

Cellulose

Fructose

Glucose

One atmosphere is equal ___________ Pascal

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760

101325

14.7

1.01325

RNA is a polymer of a nucleotide which consist of three components. Which one is not the component in the nucleotide of an RNA

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D-Ribose

wracil base

prosphate group

thyamine base

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

How much quantity of total water is available as fresh water

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3%

1%

10%

21%

Which of the following is not a property of crystalline solid

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geometric shape

cleavage plane

anisotropy

isomerism

Elimination bimolecular reactions usually obey

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First order kinetics

Second order kinetics

Third order kinetics

Zero order kinetics

Effective magnetic moment of Sc³⁺ion is

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1.73

0

5.92

2.83

On adding sodium nitroprusside ketones give

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Red

Wine red

White

Orange

E₂has molecularity :

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One

Two

Three

Half

The element like nitrogen, phosphorus, calcium, are added in large amounts to the soils and are called

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Nutrents elemets

Basic elements

Additives

The freezing point of 1 molal NaCl solution assuming NaCl to be 100% dissociated in water in

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-1.86°C

-3.72°C

+1.86°C

+3.72°C

The reactivity order of alkyl halides for a particular alkyl group is:

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F >Cl>Br>I

Cl>Br>F>l

l>Br>Cl>F

Br>l>Cl>F

The electropositive elements from

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Acidic oxides

Basic oxides

Neutral oxides

None

Which one of the following is a water soluble vitamin?

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Naacin

Riboflavin

Trypsin

Ascorbic acid

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First order

Pseudo first order

Second order

Zero order

In incinerating the waste is burnt at

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1000°C

100°C

2000°C

1500°C

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