Question # 1

The tyndall effect was used by Zsigmondy to device.

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The ultramicroscope

The ultracentrifuge

The osmometer

Electrodialysis

What is a method of casehardening involving diffusion in which the steel to be casehardened is machined, heat treated placed in an air tight box and heated to about 1000 ^oF

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Annealing

Normalizing

Carburizing

Decomposition

20 micron =____________________ nm

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20 x10^-9

20000

200

20x10⁹

Which of the following substance has been advocated as fuel of future.

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O2

N2

H2

H2O

Which of the following solution would exhibit abnormal colligative proportions.

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0.1 M NaCl

0.1 M urea

0.1 M sucrose

0.1 M glucose

The osmotic pressure of a solution with definite composition.

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Varies directly as the volume and temperature.

Various inversely as the temperature.

Varies inversely as the volume and directly as the temperature.

None of the above

Which of the following pair on aldol condensation followed by dehydration gives methyl vinyl ketone.

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HCHO and CH3COCH3

HCHO and CH3CHO

CH3CHO and CH3CHO

CH3COCH3 and CH3COCH3

Which of the following is diamagnetic

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O2

O2+

O2-

O2 ^2-

Mangalium is an alloy of.

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Al + Mg

Mg + Ai + Mn

Mg + Ai + Cu

Mg + Ai + Cu + Mn

Is an instate able colourles gas with a sticky sweet odor and is extremely toxic.

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B2 H6

B4 H10

B3 H9

B6 H10

Phosphorus is detected by fusing the organic compound with -------followed by extraction with H2O

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HNO3

H2SO4

Sodium per oxide

Ozone

The rotation of plane polarized light when it posses through 1 dm of a solution containing 1 gram of the substance per cm3 of the solution is called.

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Molar rotation

Molar refraction

Specific refraction

Specific rotation

The oxidation state shown by phosphorus is.

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- 3

+ 3

+ 3 and +5

-3 ,+ 3 and +5

Which of tetra chloride is resistant to hydrolysis.

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CCl4

SiCl4

GeCl4

SnCl4

[Ti(OH2)6]3+ gives colour

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Green

Red

Purple

Blue

Which of the following species is determined by complex metric titrations.

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K+

Na+

Ca+

Cl-

During sintering densification is not due to

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Atomic diffusion

Surface diffusion

Bulk diffusion

Surface tenstion

Elements in the same vertical group of the periodical have same

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Number of electron

Atomic number

Number of valence elections

Electronic configuration

Which of the following expression is correct.

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C = n/RT

C = RT/n

RT = Cn

Cn = 1/RT

The plate height is the length of the column divide by

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Length of the column

Width of the column

Number of theoretical plates

Number of components of the mixture.

The normality of 2.3 M H2SO4 solution is.

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0.46 N

0.23 N

2.3 N

4.6 N

Which treatment is done with pulp before delivering it to paper making machine.

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Pulp is disperse din water to make slurry

Mechanical refining or heating of the fibers

Addition of chemical additives and recycled fibres from the waste paper plant

All above

In a standard Weaton cell the cathode is

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Cadmium amalgam

Mercury

Platinum

Carbon

Stereotsomers not related to each other as object and minor image are called.

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Enantiomers

Diastereolsomers

Conformations

Antipodes

Which of the following source of energy is abundant everlasting and non polluting.

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Nuclear

Electric

Solar

All above

Turpentine is obtained from._______________

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Oak tree

Pine tree

Birch tree

Lemon tree

Enzymatic action is heat at a fixed

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Temparature

pH

Both of these

None of these

Hydrolysis of nucleoprotein result in the formation of.

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Proteins

Nucleic acids

Both A and B

They do not hydrolyse

The formula of bleaching powder is.

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Ca OCl2

CaCIO3

Ca(CIO)3)2

CaOCI

The number used in cancer therapy is.

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Fe

Co

Ni

Rn

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

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Ethanal

Ethanoic acid

Ethanol

Ethync

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