Question # 1

Which name is associated with the rules which help in predicting the portability of anion.

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Soddy

Slater

Fajan

Linus pauling

In the process of preparation of detergents the organic acids produced are neutralized with.

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Sodium hydroxide

Sodium sulphate

Sodium chloride

Potassium hydroxide

Which of the following has the highest melting poing.

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NaCl

Li Cl

KCl

Rb Cl

The compounds whose formation require a host compound and a guest compound are called.

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Exclusion compounds

Inclusion compounds

Crystal compounds

None of the above

What group of steels are molybdenum high sped steels.

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Group A

Group D

Group M

Group H

Ferrochrum contains Cr up to

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60-70%

70-80%

80-90%

40-50%

Silicon bronze contains how many percent of silicon.

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96%

3%

1 %

69 %

Which of the following sets of quantum number is possible.

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n = 4, l = 3, m = -3 ,s = 0

n = 4, l = 0, m = 0, s =+1/2

n = 4, l = 4, m = -4, s = -1/2

None of these

In plant noise control, which of the following method is used for reducing noise

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Plant planning

Control at the source

Control of radiated noise

All above

Which of the following radical is not a member of III group

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Al³⁺

Fe²⁺

Ca²⁺

Fe³⁺

The reduction of an alkyne to alkene using Lindlar's catalyst results into

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Syn addition of hydrogen atoms

Anti addition of hydrogen atoms

A mixture obtained by ayn and anti addition of hydrogen which are equilibrium with each other

A mixture obtained by syn and anti addition of hydrogen which are not in equilibrium with each other.

Which of the following statement is not correct.

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The element with highest IE belongs to group 18

In each period the element with lowest IE belongs to group I

In each period the element with highest IE is a noble gas

In the second period as we move from left to right, ionization energy increases reqularly.

Which of the following compounds would you use in order to obtain a crystalline derivative of an aromatic amine.

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2,4 Dinitrophenyl hydrazine

Nitrous acid

Benzoyl chlride

None of these

Ingold's isoprence rule states that in terpenoids isopren units are joined.

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Head to tail

Head to head

Tail to tail

In a random order

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

Which of the following steps is not involved in chemical analysis.

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Separation of sample in pure form

Separation of the sample in the mixture form

Preparation of sample for the analyisis

Validity of experimental results

Hydrolith is the common name of

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NaH

CaH2

NaF

CaF2

Which of the following hydroxide is amphoteric.

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B(OH)3

Al(OH)3

Ga (OH)3

In (OH)3

Boron and aluminum halides are electron deficient compounds in this respect. they act as.

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Lewis acid

Lewis base

Oxidizing agent

Reducing agent

Which of the following is NOT a hardware requirement for die casting.

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Water cooled metal cavities

Machined metal holding blocks

Ejection mechanism

Metal mold

Finely divided iron combines with CO to give.

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Fe(CO)5

Fe2(CO)9

Fe(CO)12

Fe(CO)6

Copper occurs in nature as.

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Native

Combined

Both native and combined

None of the above

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 elements would have the lowest first ionization energy

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Mg

Rb

Li

Ca

The unit cell having dimensions, a = b=c, alpha = beta= gama not equal 90 ^o is known.

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Cubic

Trigonal

Tetragonal

Monoclinic

What is called black gold.

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Petroleum

Coal

Coal tar

Natural gas

The most important conditions for the formation of ionic bond are.

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High ionization energy of the metallic atom and high electron affinity of the non metallic atom.

Low ionization of the metallic atom and low electron affinity of the non metallic atom.

Low ionization energy of metallic atom and high electron affinity of the non metallic atom

High ionization energy of the metallic atom and high electron affinity of non metallic atom.

Which of the following does NOT react with sodium hydroxide solution.

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Fat

Vinegar

Ethanol

Water

The base which in not present in DNA is

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Adenine

Guanine

Thymine

Cytosine

Albumin is classified as

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Simple protein

Conjugated protein

Lipoprotein

Derived protein

Pick out the incorrect statement regarding ozone.

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O3 is an unstbale dark blue diamagnetic gas

The central oxygen in O3 is sp3 hybridized

It cause the tailing of mercury

It does not react with KOH

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