Question # 1

Stainless steel consists of which elements.

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Fe only

Cr only

Fe and Ni

Fe ,Ni and Cr

Which of the following is not a component of flame photometer.

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Pressure regulator and flow meter

The atomizer

The burner

Hallow cathode lamp

The oxidation Number of I in HIO4 is.

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+6

+ 7

+ 3

+ 14

Thermogravimetic analysis has application is which of the following fields

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Gravimetric analysis

Discovery of new methods ofseparation

Determination of purity and thermal stability

All above

Carbides because of their hardness are

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Ionic carbides

Interstitial carbides

covalent carbides

Any of above

Metal are

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Hard

Ductile

Malleable

All

Which one of following is non polar

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CH2Cl2

CCl4

CHCl3

CH3Cl

Which of the following is renewable resources of energy.

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Hydropower

Wind power

Solar power

All above

The bond order for BO molecule is.

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2.5

3.0

2.0

3.5

Which of the following pollutant is not primary pollutant.

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Ash

Smoke

SO3

SO2

Calander stock is a process in paper making in which.

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Thickness of the paper is reduced

Surface of paper is made smooth

Moisture is removed

Both A and B

NH3 has a not dipole moment while BF3 has zero dipole moment Thsi is because.

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NH3 is not a planar molecule while BF3 is a planar molecule.

NH3 is a planar molecule, while BF3 is a planner molecule.

Fluorine is more electronetative than nitrogen

Born is more electronegative than nitrogen

Which of the following statement is false regarding lyphilic sols.

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The colloidal particles show a linking for the dispersion medium

These are generally easy to prepare

These are more stable than lyophobic sols

The stability of the sols is mainly due to the electrical double layer

Select the major product obtained from the addition HBr to 1-methyl cyclohexene.

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1- bromo -2- methyl cyclohexane

6- bromo-1- methyl cyclohex - 1- ene

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

1- bromo-1- methyl cyclohexane

Retarded reaction are those

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In which the rate of the reaction is independent of pressure

In which products are strongly adsorbed on the surface of the solid catalyst

Which are reversible under all conditions

For which G is positive

Zero group of the periodic table consists of.

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Four elements

Five elements

Six elements

Eight elements

Which of the following is not a component of a gas chromatography system.

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Carrier gas

Capillary column

Packed column

Cathode lamp

Final paper wound in the form of a real having final moisture of about.

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6-8%

9 - 12 %

13-15 %

4 - 10%

Which of the following statements is false about transition metals.

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They form complexes

They show variable valency

All transition metal compounds are paramagnetic

They form coloured ions

Out of seven crystal system, how many can have body centered unit cell.

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3

4

2

7

Which of the following gas is not used as carrier gas in GC.

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Argon

Nitrogen

Helium

CO2

Which of the following is not a redox indicator.

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Ferroin

Diphaylamine

Phenolphthalein

Methyl blue

Which of the following is not a characteristics of terpenoids.

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They are pleasant smelling liquids

They are steam volatile

They are nitrogenous bases

they are insoluble in water

Monomers are Teflon is

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Monochloroethene

1,2- Difluoroethene

1,1,2- Trifluoroethene

Tetrafluoroethene

In biological ecosystem which of the following substance is used by organisms.

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Water

Sunlight

Minerals

All above

Citral when heated with KHSO4 forms.

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Isoprene

p-cymene

p-menthane

Dipentene

Which of the following has highest ionization energy.

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Oxygen

Argon

Barium

Caealum

Which one has a co ordinate bond.

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Al2Cl6

BF3

NaCl

O2

Which one of the following statements is not true.

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Transition metals form alloys

Transition metals form complexes

Zn, Cd and Hg are transition metals

K2[PtCl6] is a well known compound but corresponding nikel compound is not knonwn

Silicon bronze contains how many percent of silicon.

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96%

3%

1 %

69 %

The lowest K.E. for an electron is three dime national cubic box is given by

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h²/ 8m^a

3h² / 8 ma²

9h²/ 8ma²

16h² / 8ma²

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