Question # 1

Which metal is used for catalytic hydrogenation of oils

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Cu

Pt

Ni

Pd

Which is not state function

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Temperature

Enthaply

Entropy

Internal energy

Steps in SN , reactions are:

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One

Two

Three

Four

Which of the following was discovered first:

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Charge to mass ratio of electrons.

Mass of electrons.

Charge of electrons.

All of above at same time.

The most acidic of the following compounds is

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P₂O₃

Sb₂O₃

B₂O₃

As₂O₃

At room temperature formaldehyde is

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Gas

Liquid

Solid

None of the above

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

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1, 1-Dimethyl-3-butene

1,1,1-Trimethyl-3-propene

3,3,-Dimenthyl-1-butene

3,3,3,-Trimethyl-1-propene

Alcohols react with carboxylic acid to produce the class of compounds known as

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Grignard's reagent

Esters

Amides

None of these

Industrial alcohol may be denaturated by the addition of

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Methyl alcohol

Acetone

Pyridine

Any of the above reagent

Alkaline earth metals posses two electrons in their outermost

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F-orbital

D-orbital

S-orbital

P-orbital

The rate equation for a reaction is Rate =k[A]. what are unit of K ?

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Mole-1 dm³ S^-1

Mole dm³ S^-1

Moledm³

S^-1

The mass of Al₂S₃formed when 20 grams Al reacts completely with S is

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60 g

50 g

50.55 g

55.55 g

The number of unpaired electrons in ferrous ion ( Z - 26) is

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3

2

4

5

Which technique is used to determine the absorption of radiations?

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Dilatometer method

Optical rotation method

Spectrometry

Refractometric method

Terylen fibre is made by reaction of terephthalic acid with

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Ethylene

Ethylene glycol

Glycol

Terylene

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Measuring pH

Measuring density

Titration against standard NaOH

Titration against standard KMnO₄solution

NaHCO₃is commonly called

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Soda ash

Baking soda

Washing soda

None of these

Boiling point of acetic acid is ^oC

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116

117

118

119

During reaction of O₂and alkenes, a product:

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Glycol

Epxide

Halohydrin

Ethylene glycol

The reaction of sodium with ethanol gives

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CH₃OH

NaH

H₂O

H₂

Bakelite is a product formed form

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Reaction of formaldehyde with phenol

Reaction of polyethylene with phenol

Reaction of polypropylene with acid

It is a natural product

When fused PbBr₂is electrolyed then

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Bromine appears at cathode

Lead deposited at the cathode

Lead appears at the anode

None of these happens

By the use of catalysis the energy of activation is

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Decreased

Increased

Not affected

None

Which of the following elements does not show variable oxidation states?

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Copper

Iron

Zinc

Titanium

type of hybridization in CH≡CH is:

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sp

sp²

sp³

dsp²

Which of the following is the most suitable method for removing the traces of water from ethanol?

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Reacting with Na metal

Passing dry HCl through it

Distilling it

Reacting with Mg

Coordinate covalent bond is present in the molecules

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H₂O

BF₃

SiO₂

SO₂

Pick up the correct statement

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CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog

Classical smog has an oxidizing character while the phtochemical smog is reducing in character

Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours

During formation of smog the level of ozone in the atmosphere goes down

A one thousand dm³sample of water contains one gram of iron (iii) ions what is the concentration in parts per million of Fe^3f(eq) in parts per million

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0.001

0.01

0.1

1.0

Benzene was discovered by Michael Faraday's in

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1824

1825

1826

1827

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