Question # 1

Which alkyne reacts with water and form aldehyde

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Ethyne

Propyne

1- Butyne

2- Butyne

The residence time of NO is

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Few hours

1 day

3 days

4 days

The general formula for Alkanes is

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C_nH_2n+1

C_nH_2n

C_nH_2n-2

C_nH_2n+2

Tincal is a mineral of

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Al

C

Si

B

m-choronitro benzene is prepared by

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Nitration of chlorobenzene

Nitration of Benzene

Chlorination of Nitrobenzene

Nitration of m-chlorobenzene

Which enzyme is not involved in fermentation of starch.

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Diastase

Zymase

Urease

Invertase

Which property of hydrogen not resemble to alkali metals.

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Electronic configuration

Oxidation state

Reaction with halogen

Metallic nature

Structure of carbonyl is

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Tetrahedral

Linear

Octahederal

Trigonal planar

The anhydride of HCIO₄is

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CIO₃

CIO₂

Cl₂O₅

Cl₂O₇

Which of the following hydrogen halide is the weakest acid in solution.

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HF

HBr

HI

HCl

Which one of the following can best be used to distinguish between samples of ethane and ethene

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Aqueous BaCl2

Aqueous bromine

Lime water

Litmus solution

Co-ordination number of Cu in

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Zero

Two

Four

Six

Geometrical shape of [CO(NH3)6Cl3

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linear

square planar

Octahedral

Trigonal hypyramid

Point out the element which forms super oxide

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Li

Na

K

C

Which one of the following metal cannot evolve hydrogen from acetic acid.

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Sodium

Potassium

Magnesium

Zinc

Which of the following compounds will not give iodoform test on treatment with I2/NaOH

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Acetaldehyde

Acetone

Butanone

3-Pentaneone

Which one is metaphosphoric acid

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HPO3

H3PO3

H3PO4

H4P2O7

Out of the elements of group VA, the highest energy is possessed by

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N

P

Sb

Bi

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