M C Q s D r i v e

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.

In solvent extraction ether is used to separate products of organic synthesis from________________?
A water
B iodine
C hydrochloric acid
D gases
Correct Answer: water
When an active metal like Al comes in contact with less active element like Cu then it produces__________________?
A dry cell
B galvanic cell
C electrolytic cell
D A and B
Correct Answer: galvanic cell
The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?
A oxidizing agent
B reducing agent
C drying agent
D colouring agent
Correct Answer: drying agent
Which is sold as fertilizer ___________________?
A CaSiO3
B Na2SiO3
C Ca3(PO4)2
D MnSiO3
Correct Answer: Ca3(PO4)2
Without suction pump filtration is __________________?
A Fast process
B Slow process
C Rapid process
D All are possible
Correct Answer: Slow process
With impurities like P and S the open hearth furnace is lined with ?
A SiO2
B Fe2O3
C FeO
D CaO MgO
Correct Answer: CaO MgO
Direct conversion of solids into vapours is called ___________________?
A Solvent extraction
B sublimation
C crystallization
D vaporization
Correct Answer: sublimation
In pig iron the concentration of C-atom is ___________________?
A 0.12 — 0.25%
B 2.5 — 4.5%
C 2.0 — 4.0%
D 0.25 — 2.5%
Correct Answer: 2.5 — 4.5%
In CCI4 I2 shows________________?
A Red colour
B Purple colour
C Blue colour
D Yellow colour
Correct Answer: Purple colour
Geometry of the complex compounds usually depends upon __________________?
A type of ligands
B types of hybridization in the elements of ligands
C hybridization of central metal
D All of above
Correct Answer: hybridization of central metal