Question # 1

Amorphous means

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arranged

ordered

shaped

shapeles (no arrangements)

The reaction of alkyl halide in the presence of alcoholic KOH is

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Substitution

Addition

Acid-base

Elimination

The temperature in the incineration of industrial and hazardous waste process has a range of:

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950-1300C

250-500C

500-900C

900-1000C

In which of the following compounds H-binding is not present?

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ethanol

ether

water

ammonia

A student put two eggs A and B in HCL solution, After five minutes he took them out for weighing but egg dropped in water accidentally. The student was able to take it out after 30 minutes, He weighed it, Its weight was 40.33g. Weight of egg B was also 40.33g. Teacher told him that if both eggs have been dropped in water, the weight of egg B would have been:

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equal to that of egg A

less than that of egg A

greater than that of egg A

unaffected instead

Anline is a derivative of:

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alkane

alkene

aromatic hydrocarbon

alicyclic

In Case of elements the polymorphism is called

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Isotopic form

Allotropy

Isomorphism

Crystalline forms

What is not correct about ∆HF

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It is always negative

Ìts value gives an idea about the relative stability of reactants and the products.

Its value can be greater or less than zero

Value depends upon nature of bonds

Which is not a steroid

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Cholesterol

Ergosterol

Phospholipids

None of these

When HCI gas is passed through saturated solution of rock salt, the solubility of NaCl

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Increases

May increase or decrease

Decreases

None of these

Which of the following best describes the shape and polarity of the carbon disulphide molecule?

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Bent and polar

Linear and non-polar

Pyramidal and polar

Bent and non-polar

The gasoline having octane No. 100 has ______

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More knocking

Less knocking

No knocking

Only knocking

Solutions with same osmotic pressures are called

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Hypertonic

Hypotonic

Isotonic

Normal

Their e/m, ratio resembles with that of electrons

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Alpha rays

Beta rays

Gamma rays

X-rays

Violet colour is obtained when dilute CuSO₄is added in alkaline solution of protein. This test is known as

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Biuret

Xanthoproteic test

Hopkins-cole

All of these

A transition metal complex can be recognized by various terms. Which is not the proper term

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Central metal ion

Coordination number

Ligand

Geometry of complex

Cracking normally gives smaller ______

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Alkanes

Alkenes

Alkynes

Both a and b

Which compound is both chiral and acidic

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Preparation of vegetable ghee involves

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Halogenations

Hydrogenation

Hydroxylation

Dehydrogenation

Which three elements are needed for the healthy growth of plants?

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N,S,P

N,Ca, P

N,P,K

N,K,C

Which one does not declourized KMnO₄

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Alkenes

Alkynes

Bezene

All above

50 cm³of 0.05 molar nrea (N₂H₄CO) solution has % W/N concentration

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6%

3%

0.3 %

0.6 %

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