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Chemistry

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

A Extra heat is spread in the air

B High energy molecules continuously leaving the surface of liquid

C The forces of attractions become stronger

D The vapour pressure of the boiling liquid becomes greater than the external pressure

A Ammonia gas

B Ice

C Ethanol

D Acetone and chloroform

A Ions don’t have translatory motion

B The coordination number of ion is very high

C Free electrons are less

D Strong covalent bonds are present in their structure

A Endothermic Reaction

B Surface Process

C Continuous Process

D All of these.

A sp hybridised carbon atoms only

B sp3 hybridised carbon atoms only

C both sp and sp2 hybridised carbon atoms

D both sp and sp3 hybridised carbon atoms

A 5 sigma bonds

B 4 sigma and 1 pi bonds

C 3 sigma and 2 pi bonds

D 2 sigma and 3 pi bonds

A CH3-CH2-CCH (1-Butyne)

B CH3-CCH(1-Propyne)

C CH3-CH2-CH2CCH(1-Pentyne)

D CH2=CH2

A Ethylene only

B Acetaldehyde and Formaldehyde

C Propionaldehyde and Formaldehyde

D Acetaldehyde only

A Bromine water

B Bayer’s reagent

C Fehling solution

D Ammonical silver nitrate

A Ethyne

B Ethene

C Ethane

D Benzene

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If heat is to be supplied continuously to a liquid at its boiling point, the temperature remains constant because:

The strongest hydrogen bonding is present in: _____________?

Ionic solids do not conduct the electrical current because:

Evaporation is_____________?

2-Butyne contains:______________?

The acetylene molecule contains:___________?

Identify the unsaturated compound that does not give red ppts when treated with____________Ammonical cuprous chloride

In the presence of Zn, Hydrolysis of ozonide of 1-butene gives:_____________?

An organic compound has a triple bond and not double bond. It can be tested by __________?

Which of the following has acidic hydrogen?