Question # 1

Has maximum property of catenation.

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C

Si

Sn

Pb

A type of a chemical bond which is formed by the mutual sharing of electrons between combining atoms of the same or different elements is called.

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Ionic bond

Covalent bond

Co ordinate Covalent bond

Metallic bond

The number of vibrational degree of freedom for CO2 is

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2

3

4

5

Low quality steels with an M. Suffix on the designation intended for non structural application is classified as.

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Merchant quality

Commercial quality

Drawing quality

Low quality

What element is the most abundant by mass in the Earth's crust.

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Fe

H

O

K

The flow of solvent into a solution when two are separated by a semi -permeable membrane is called.

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Mixing

Effusion

Diffusion

Osmosis

Select the major product obtained from the addition of HBr to I -Methyl cyclohexene

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1-bromo -2- methyl cyclohexane

6- bromo-i- methyl cyclohex -i- ene

3- bromo -1- methyl cyclohex - 1- ene

I-bromo -I- methyl cyclohexane

If Principal quantum number n = 4 the quantum number l can have calue.

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1,2,3 and 4

0,1,2 and 3

1,2 and 3 only

None of the abvoe

Hybridization involves.

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Orbitals of same atom with slightly different energies.

Orbitals of different atoms, but with equal energies.

Orbitals of the same atom but with widely different energies.

Orbitals of different atoms with different energies.

Each of the following compound react with Grignard's reagent to form alkane exxcept.

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Ethanal

Ethanoic acid

Ethanol

Ethync

Which of the flowing operator combination would yield eight value equation

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d/x (sin x)

d/dx (cos x)

d /dx (sin 4x)

d /dx (cos 4x)

d/dx (e^x)

Which of the following is not an alkali metal

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Rb

Sb

Cs

Fr

iodine is used as

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Tincture of iodine

Iodex and antiseptic

Treatment of goiter

All above

An impure sample of camphor contaminated with sand, can be purified by

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Distillation

Sublimation

Steam distillation

None of the above

The commonly used catalyst in the manufacture of H2SO4

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Fe2O3 with a little CuO

v2O5

Platinized asbestos and MgSO4

All above

Which of the following metal acts as pollutant.

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Hg

Pb

Zn

Ni

All above

Which of the following effects best explains that o-nitro phenol is insoluble in water.

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Inductive effect

Resonance effect

Intramolecular H -bonding

Isomeric effect

Solar energy mainly light originates from sun due to.

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Addition relations

Displacement reactions

Thermonuclear reactions

Substitution reactions

For a given mass of a gas if temperature increase

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Pressure and volume remain Constance

Volume increases provided pressure is kept constant

Pressure decreases provided volume is constant

Both volume and pressure decrease

Example of peseudohalonge group.

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Cyanogen

Thiocyanogen

Selenocyanogen

All above

Granulated sugar also known as.

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Brown sugar

Refined sugar

White sugar

None of these

What is the minimum tensile strength of gray Cast Iron class 50

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25000 ibf /in²

50000 ibf/in²

100000 ibf/in²

900000 ib/in²

Combination of a -amino acid through which linkages results result in formation of protein

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Ester linkage

Glycosidic linkage

Lactum linkage

Peptide linkage

Which of the following statement is no true with respect to nitrogen dioxide.

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It is produced by the oxidation of NO

Its small concentration has been detected to lower stratosphere

It is major pollutant

It does not absorb sunlight.

The photoelectric effect is the ejection pf electrons from the surface of metal when light falls on it. Which of the following statements is not correct about the phenomenon.

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The kinetic energy of photo electron depends upon the frequency of the incident radiation

Electrons are ejected only when the frequency of light exceeds a certain threshold value

The higher the energy of the photon greater the kinetic energy of the ejected electron.

The threshold frequency of all the metals is same.

At the some temperature 0.1 M solution of urea is isotonic with.

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0.1 M glucose solution

0.1 M NaCl solution

0.1 M urea solution

0.1 M BaCl2 solution

A^o or 10 Dq is called crystal field.

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Energy

Splitting energy

Stabilization energy

None of above

Which of the following oxides is amphoteric..

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CaO

BaO

BeO

MgO

Among the following a good solvent for a Grignard reagent formation would be.

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t- butanol

dimethyl ether

difiuoro ethane

tetrahyudroform

The stationary and mobile phases in paper chromatography are.

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^{Liquid/Liquid}

Solid /Liquid

Liquid/Solid

Gas/solid

The compound (CH3)3COH according to IUPAC is known as.

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Tert Butanol

2,2 -Dumethyl -Propanol

2- Methyl -2-propanol

Tert Alcohol

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