Question # 1

Ammonium nitrate is sold as a mixture with

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Soda Ash

Lime stone

Zinc

None of above

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

Permanent hard water is softened by addition of.

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Na2CO3

CaCO3

MgCO3

ZnCO3

Which of the following compounds cannot be a monomer.

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CH3-CHOOH -CH2OH

NH2 -CH2-NH2

CH3-CH2-NH3

NH2-CH2-CH-CH2 -NH2

CH3

Greenish yellow gas with pungent irritating odour

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Chlorine

Fluorine

Iodine

Bromine

Deviation in a particular measurement is the difference between the measured value and the average value The arithmetic mean of the different deviations observed in several measurements of the same quantity is known as.

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The standard deviation

The average deviation

Relative mean deviation

variance

Which of the following statements not correct with the concept of Bronsted concept of acids and bases.

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An acid can donate a proton

A base can accept a proton

This concept has many bases that have OH- ions

This concept is more general

Helium is used for

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The preservation of food

Filling electrical transformer

Pressuring agent in rockets

All of above

Which of the following energy is trapped by the autotrophic organisms.

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Mechanical energy

Electrical energy

Radiant energy

Electronic energy

Which of the following is always true for the adiabatic expansion of gas.

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Temperature rises

Pressure rises

W=0

Q = 0

The molar mass of an organic acids is determined by

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Depression of freezing point

Elevation of boiling point

Volumetric method

Victor Myer's method

The link between classical thermodynamics and quantum mechanics is prevented by

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Statiatical mechanics

Boltzmann law

Wave mechanics

Matrix mechanics

Noble gases are sparingly soluble in water owing to.

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Dipole -dipole interactions

Dipole -induced dipole interactions

Hydrogen bonding

Induced dipole -instantaneous dipole interactions

Which one has a co ordinate bond.

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Al2Cl6

BF3

NaCl

O2

CCl4 has zero dipole moment because of.

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Planar structure

Tetrahedral structure

Similar size of C and Cl atoms

Similar electrons affinity of C and Cl

The formula of hexa borane is.

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B4H10

B6 H10

B5 H9

B8 H12

The electronic configuration of sodium (Z=11)

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1s2, 2s2, 2p4

1s2, 2s2, 2p6, 3s2 , 2p5

1s2, 2s2, 2p6, 3s1

1s2, 2s2, 2p6, 3s2

What is the ratio of the maximum load in a tension test to the original cross sectional area of the test bar.

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Tensile strength

Yield strength

Shear strength

Torsion

Oxalic acid when heated withe conc. H2SO4 it gives out.

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H2O and CO2

CO and CO2

CO2 and H2S

Oxalic sulphate

The bond along Sp2 hybridization is.

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180^o

120^o

109.5^o

160^o

Which of the following elements display maximum tnedency to form P Pi - p PI multiple bonds with itself and with carbon and oxygen.

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N

p

Bi

As

The electronic configuration of chromium (Z =24) in the ground state is.

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[Ar] 4s² , 3d⁴

[Ar] 3d⁶

[Ar]4s¹, 3d⁵

[Ar]

Which of the following techniques involves the distribution of solute between two immiscible liquid phases.

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Chromatography

Electrophoresis

Solvent extractions

Solid phase extraction

In statistical mechanics, there exists a function which contains all the information about a macroscopic system. This function is known as.

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Eigen function

Wave function

Partition function

Distribution function

a-terpioneol is obtained on hydration of which of the following with dilute H2SO4.

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Citral

Myrcene

Linalool

Limonene

Cement is a mixture of

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Clay and clinker

Clay limestone and gypsum

Limestone and gypsum

Binder

a -amino acids when heated alone form

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Cyclic lactum

a-b-unsaturated acid

Fatty acids

Diketopiperzines

The geometry of the molecule is primarily decided by

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Bond pairs around the central atom

No of k bond around the central atom

No of bond pairs as well as lone pairs around the central atom

No. of lone pairs on central atom

Stable metal ions strictures are.

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Noble gas structure

Is electron group structure

Transition metal in structure

All of the above

Which of the following specie is stronger acid than formic acid, HCOOH, in aqueous solution.

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CH3COOH

NH+4

H2SO-3

H4P2O7

Which of the following combination is used to make buffer.

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NaOH and HCl

KOH and H2SO4

CH3COOH and CH3COONa

CH3COOH and NH4OH

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