Which is the third most abundant element in the nature?
- Oxygen
- Aluminum
- Sulphur
- Hydrogen
Submitted by :- Muhammad Nawaz
CHEMISTRY
Prepare for your upcoming test with a comprehensive collection of Chemistry multiple-choice questions (MCQs), ranging from basic to advanced topics. These Chemistry MCQs cover various sections of the subject, providing you with valuable practice and boosting your chances of scoring well in the Chemistry portion of the test. Whether you’re a student or a job seeker preparing for exams, these MCQs will prove beneficial for your test preparation.
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Which one of the following alcohols will be formed when ethyl magnesium bromide reacts with acetone ?
A. primary alcohol
B. secondary alcohol
C. tertiary alcohol
D. dihydric alcohol
Submitted by :- Jamil Ahmed
Which one of the following species is not an electrophile?
A. NH3
B. Br+
C. H+
D. BF3 (more…)
Submitted by :- Jamil Ahmed
Which is the second anciently known metal?
- Copper
- Nickel
- Silver
- Gold
Submitted by :- Muhammad Nawaz
The ether used in Wurtz synthesis is__________________?
Which ore is/are used for Hg extraction?
- Cinnabar
- Zinc blende
- Calamine
- All of these
Submitted by :- Muhammad Nawaz
Which ore is/are used for Zn extraction?
- Zincite
- Zinc blende
- Calamine
- All of these
Submitted by :- Muhammad Nawaz
Grignard reagent is reactive due to___________________?
A. the presence of halogen atom
B. the presence of magnesium atom
C. the polarity of C-Mg bond
D. all
Submitted by :- Jamil Ahmed
Which of the following is/are chemical methods for ore concentration?
- Calcination
- Smelting & leaching
- Roasting
- All of these
Submitted by :- Muhammad Nawaz
Elimination bimolecular reactions involve____________________________?
A. first order kinetics
B. third order kinetics
C. second order kinetics
D. zero order kinetics
Submitted by :- Jamil Ahmed