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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

In unsaturated hydrocarbons electrons favour___________________?
A less reactivity
B addition reactions
C substitution reactions
D none
Correct Answer: addition reactions
An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?
A Group IA
B Group IB
C Group VIIA
D Group VIII
Correct Answer: Group IA
Alkenes are produced from dehalogenation of________________?
A dihalo alkane
B trihalo alkane
C vicinal dihalo alkane
D vicinal trihalo alkane
Correct Answer: dihalo alkane
Which of the following cannot exist in solution_________________?
A O-2
B H+
C Cl-
D Na+
Correct Answer: O-2
Which of the following will be acidic_____________?
A propyne
B 1-butyne
C ethyne
D all of the above
Correct Answer: all of the above
Which one of the following element has highest oxidation state in its compounds ?
A Cr
B Mn
C Sn
D O
Correct Answer: Mn
The gas used in manufacturing of urea fertilizer__________________?
A C2H6
B C2H4
C C2H2
D CH4
Correct Answer: CH4
True increasing order of acidity of the oxides of Mn is_________________?
A MnO < MnO2 < Mn2O7
B Mn2O7 > MnO2 > MnO
C MnO2 > MnO > Mn2O7
D MnO2 > Mn2O7 > MnO
Correct Answer: Mn2O7 > MnO2 > MnO
Introduction of nitro group in a molecule is called___________________?
A nitration
B halogenation
C sulphonation
D amination
Correct Answer: nitration
Which of the following possesses maximum hydration energy ?
A Na+
B K+
C Mg+2
D Ca+2
Correct Answer: Mg+2
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