Here, you may find CSS Optional Subjects MCQs. If you want to prepare MCQs of optional subjects, CSS MCQs platform is here to serve you while preparing your MCQs portion of your CSS Exam. Please practice these CSS Optional Subjects MCQs on a daily basis.
Air can be distilled fractionally because the constituents of the air
A. can be liquefied
B. have different boiling points
C. are gases at room temperature
D. have different densities
Show Answer…...Hide AnswerCorrect Answer: B. have different boiling points
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Keeping in mind different factors which affect the melting point of a substance, the compound having highest melting point among the following is
A. NaCI
B. RbCI
C. LiCI
D. CsCI
Show Answer…...Hide AnswerCorrect Answer: A. NaCI
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Islamian genius told his follows that in a crystal the atoms are located at the position of
A. zero potential energy
B. infinite potential energy
C. maximum potential energy
D. minimum potential energy
Show Answer…...Hide AnswerCorrect Answer: A. zero potential energy
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All of the following have cleavage planes except
A. ionic crystal
B. covalent crystals
C. molecular crystals
D. metallic crystals
Show Answer…...Hide AnswerCorrect Answer: D. metallic crystals
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Coordination number of Na+ in NaCI is
A. 1
B. 4
C. 2
D. 6
Show Answer…...Hide AnswerCorrect Answer: D. 6
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For a crystal system a b c and the example for this crystal system is
A. CuSO4.5H2O
B. Na2B4O7.10H2O
C. ZnSO4.7H2O
D. BaSO4.4H2O
Show Answer…...Hide AnswerCorrect Answer: A. CuSO4. 5H2O
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All of the following have crystals except
A. diamond
B. NaCI
C. KBr
D. CdS
Show Answer…...Hide AnswerCorrect Answer: D. CdS
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