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Chemistry 1488 MCQs [All-Courses]

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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.

All Topics  1488

On reduction with LiAlH4 ,Ketone gives__________?
A Primary Alcohol
B Secondary Alcohol
C Tertiary alcohol
D None of These
Correct Answer: Secondary Alcohol
In SI base units, 1 Bq is equal to __________ ?
A 10 disintegration per second
B 1.5 disintegration per second
C 0.01 disintegration per second
D 1 disintegration per second
Correct Answer: 1 disintegration per second
Alcohols of lower Molecular weight are _______________?
A More Soluble in water
B Insoluble in water
C Soluble in water on heating
D Insoluble in all solvents
Correct Answer: More Soluble in water
A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
A Beta particle
B Gamma particle
C Alpha particle
D Negative particle
Correct Answer: Alpha particle
Identify the Lucas reagent among the following
A Conc. HCl & Anhydrous ZnCl2
B Dil. HCl & hydrated ZnCl2
C Conc. HNO3 & Anhydrous ZnCl2
D Conc. HNO3 & Anhydrous MgCl2
Correct Answer: Conc. HCl & Anhydrous ZnCl2
Methyl alcohol on oxidation with acidified K2Cr2O7 gives__________?
A CH3COOH
B CH3CHO
C HCOOH
D CH3COCH3
Correct Answer: HCOOH
The reaction of C2H5OH with conc. H2SO4 does not give_________?
A Ethene
B Diethyl ether
C Acetylene
D Ethyl hydrogen sulphate
Correct Answer: Acetylene
In Periods from Left to right Electronegativity will: _________?
A increase
B decrease
C constant
D none of these
Correct Answer: increase
The number of moles are present in 9.5g of CS2?
A 1.5
B 0.25
C 0.125
D None of These
Correct Answer: 0.125
The one mole of _____molecule has the highest number of atoms?
A H2SO4
B HClO4
C O3
D H2C2O4
Correct Answer: H2C2O4
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