Question # 1

Polarity of a molecule is expressed in terms of

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Bond strength

Dipole moment

Bond length

Shape

Carboxylic acids having carboxyl group one is called:

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Mono carboxylic acid

Di-carboxylic acid

Teri-carboxylic acid

Tetra carboxylic acid

Which is trigonal crystal

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CaSO₄. 2H²O

MgSO₄

NaNO₃

All

A fat or oil is characterised for extent of unsaturation by one of the following number,which one

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rancidity number

acid number

iodine number

saponicfication number

Transition compounds which occur as tripositive ions have no

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4s-electron

3p-electron

3s-electron

2s-electron

The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?

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39.6

40.5

42.7

45.1

Which three element are needed for the health growth of plants:

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S,S,P

N,Ca,P

N,P,K

N,K,C

Gases show uniform behavior towards their:

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Internal conditions.

External conditions.

Internal and external conditions.

None of above.

At higher temperature isotherm of Boyle's law moves away from both axis, is due to increase in:

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pressure

No. of moles

Volume

All

When water freezes at 0°C, its density decreases due to

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cubic structure of ice

empty spaces present in the structure of ice

change of bond lengths

change of bond angles

The dehydration of ethyl alcohol with concentrated H2SO4 at 140°C gives

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Ethene

Alcohol

Diethyl ether

Carboxylic acid

The quantum number which describe the orientation of the orbitals is

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Spin quantum number

Principle quantum number

Azimathal quantum number

Magnetic quantum number

Which of the following expressions show a heterolytic bond fission

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The three N - Hσ-bonds are made by

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sp³- s overlap

sp²- s overlap

P - p overlap

sp - overlap

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Small change in concentration of product

Small time internal

Co-efficient of the reactant

Co-efficient of the product

An organic compound will decolorise dill acidified (aq) KMnO₄on warming, but will not decolorise bromine water. What is the compound

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KMnO₄

Ethanol

Ethane

CH₃CH₂Cl

In the atmosphere, CO₂is about

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0.01%

0.03%

0.05%

0.09%

Which of these always applies to a nucleophile

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It attacks a double bond

It has a lone pair of electrons

It is single atom

It is negatively charged

Transition metals form complexes due to the participation of partially filled

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f-orbitals

d-orbitals

s-orbitals

p-orbitals

Either, an organic compound has close resemblance in structure and thus a derivative of:

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Water

Oxides of lithium

Oxides of magnisium

Oxides of aluminium

During the process of crystallization, the hot saturated solution:

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is cooled very slowly to get large size crystals

is cooled at a moderate rate to get medium sized crystals of the product

is evaporated to get the crystals of the products

is mixed with an immiscible liquid to get the pure crystals of the product.

Which gas is produced by treating CaC₂with water

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Methane

Ethane

Acetylene

HCI

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