Question # 1

The number of Glass products now manufactured is.

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25,000

75,000

50,000

All of these

According to systematic nomenclature which hydrogen compound is sulphane.

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HF

Si H4

SF4

H2S

Which of the following state is not true with respect to copper.

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it is malleable and ductile

It is a best conductor of heat and electricity

It forms alloys easily

Moltan copper absorbed carbon dioxide

If there are only two components in a solution with mole fraction X_Aand X_Bthen which of the following relation is correct.

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X_A + X _B = 0

X _A + X _B > 1

XA = XB < 1

XA = 1 - XB

The solution of NaOH pH -10.46 contain [OH-]

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2.0 X. 10^-4

4.6 X 10^-4

4.6 X 10^-2

4.6 X 10^-3

The noble gas used or treatment of cancer is

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Helium

Argon

Radon

Krypton

Which of the following statements do not represent Lewis idea of acids and base?

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Compounds which have completely filled orbitals

Compounds which have incompletely filled orbitals

Compounds in which the central atom can expand its octel

All simple metal ions like Ag+, Al3+ etc.

Nano technology in other words is.

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Carbon engineering

Atomic engineering

Small technology

Microphysics

Which of the following molecules belongs to C_av point group.

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H2O

H2S

NH3

BF3

Which of the following is not a component of AAS.

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Hollow cathode lamp

Burner

Detector

Tungsten lamp

Which of the following level is an indicator of hearing loss.

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> 25 dB

< 25 dB

<20 dB

None of these

The vitamin which is related to monossaccharides is.

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Vitamin A

Vitamin C

Vitamin D

Vitamin E

What % if nickel is present in the major ore Pentlandite.

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22%

18%

14%

10%

Sodium Tetra borate is used

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As alkaline buffer in dying & bleaching process

In manufacture of opticl glass

in enameling and making glaze

All above

In the Friedel-Craft acylation, the amount of AlCl3 tha tmust be taken is

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In catalytic amount

One equivalent

More then one equivalent

Amount does not matter

The main constituents of ___________ are boron oxide and silica.

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Pyrex glass

Low silica glass

Soda lime glass

Super hard glass

The entropy of the universe

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Tends towards a maximum

Tend towards a maximum

Tends to be zero

Remains constatn

Which of the following statement is not correct with reference to cell constant.

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The dimensions of cell constant is cm-1

It is used to determine the specific conductance

It is measured with KCl solution

Specific conductance does not vary with concentration.

During the titration of weak acid against NaOH the conductance of the solution after the neutralization point.

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Is constant

Decreases

Varies irregularly

Increase

The process of passing of a precipitate into colloidal solution, on adding an electrolyte is called.

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Dialysis

Peptization

Electrophoresis

Electromsmosis

Lux -Flood concept is a dono-acceptor system of.

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Proton

Electron pair

Neurtron

Oxide ion

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

Soap is soluble in grease because it

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Is non polar

Has a hydrophobic head

Has a hydrophobic tail

Has an ionic head and a hydrocarbon tail

The unit of specific conductance will be

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S cm-1

Ohm cm

Ohm cm-1

Mho cm

Which of the following interaction is the strong.

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Dipole -dipole

Ion induced dipole

Ion -dipole

Dipole induced diple

Inert pair effect is best shown by

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Si

Z

Sn

Pb

Correct order of increasing ______ I effect of groups is

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----- NO2 >-----------CN > ------------COOH > -------------F

--------F > -------------COOH>----------CN>--------NO2

-----F> -------------CN>--------NO2 > COOH

-------CN > ------------COOH > -----------NO2 >----------F

The group H steels can be used n what temperature range.

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600^oC to 1100 ^oC

1000 ^oC to 1500 ^oC

1100 ^oC to 2000 ^oC

200 ^oC to 800 ^oC

In order to give strength and elasticity natural rubber is heated with.

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Sulphur

Oxygen

Nitrogen

Chlorine

Which of the following information is correct about a typical packed column in GC.

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10-100 m long and 2 to 6 cm to diameter

1-10 m long and 0.2 to 0.6 cm in diameter

0.1-1 m long and 0.02 to 0.00 cm in diameter

None of the above

In a system of designating wrought aluminum alloys a sour digit number is used what does the first digit indicate.

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The purity of aluminum

The identity of the alloy

The alloy group

All of above

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