Question # 1

If v is the volume of one molecule of a gas under given conditions, then Van der Waals constant b is (N_Ais Avogadro number)

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Consider the reaction

PCI5 (g) <---------> PCl3 (g) +Cl2 (g) in a closed container at equilibrium. At a fixed temperature, what will be the effect of adding more PCl5 on the equilibrium constant

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It increases

It remains unaffected

It decreases

Can't be predicted without Ki

Pan is an irritant to human beings and it affects

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Eyes

Nose

Hair

Skin

Components of environment is (in km) around the earth:

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10 km

100 km

1000 km

1500 km

Raffinose is a trisacharirde composed of monosaccharide is

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Glucose

Glactose

Fructose

All

Lithosphere extends upto kilometer of earth crust in depth:

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10 km

100 km

1000 km

10000 km

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

Monosacharide belong to the group

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Fats

Carbohydrates

Lipids

Proteins

Water bodies are included in:

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Atmosphere

Hydrosphere

Lithosphere

All of these

Paramagnetic behaviour is caused by the presence of

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Unpaired electrons

Paired electrons

Paired protons

Paired electrons in an atom. molecule or ion

If the volume term is present in denominator of Kc expression, then which one is correct

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Increase in pressure will shift the reaction backward

Increase in pressure will shift the reaction forward direction

Decrease in volume will shift the reaction forward direction

Reaction will not effected

Which one of the following is a colligative property?

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Surface tension

Osmotic pressure

Viscosity

Refractive index

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Zeeman effect.

Stark effect

Photoelectric effect.

Compton effect.

DNA is a polynucleic acid. The monomer is known as a nucleotide. What is not the component of the nucleoptide

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Phosphate group

Deoxy ribose sugar

Uracil base

Adenine base

Odour of alkene is:

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Fruity

Odourless

Zarlic like

Irritating

Carboxylic acid, ester, amide and amino groups are shown. Which is the correct description of these functional groups

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Between CH₃COOH and HCOOH, HCOOH will be

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Less acidic

Equally acidic

More acidic

None

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32 g

3.2 g

5.6 g

9.6 g

Nitrogen in NH₃is sp³hybridized but the bond angle in NH₃is 107° and not 109.5° due to

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sp³orbital planar

sp³orbital trigonal

Repulsion between lone pair and bonded pairs

None of them

Alkyne is :

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CH_3-CH₃

CH₄

CH₂₌CH₂

C₂H₂

Group l-A elements react with water fastly than the reaction of group ll-A elements because

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l_Aelements are more soft then ll_A

l_Aelements are non-metals

l_Aelements have 1 electron in their outermost s-orbital and are strongly electropositive

l_Aelements make ionic bond

A substance which increases the rate of a reaction without being consumed during the reaction is called

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An autocatalyst

A catalyst

A negative catalyst

All of these

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