Which element is necessary for normal leaf development ?
A. Si
B. Ba
C. Mg
D. Ca
Submitted by :- Jamil Ahmed
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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The word Alkali means__________________?
A. Base
B. Basic salt
C. Ashes
D. Spirit
Submitted by :- Jamil Ahmed
Which one is least ionic in nature and decompose on heating ?
A. LiOH
B. NaOH
C. KOH
D. CsOH
Submitted by :- Jamil Ahmed
How many electrons are there in benzene to form delocalized electron cloud________________?
A. 3
B. 4
C. 6
D. 8
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Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?
A. Two
B. Three
C. Four
D. Five
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Addition of 2% gypsum in cement________________?
A. Triggers hydration
B. Triggers hydrolysis
C. Prevents rapid hardening
D. all of the above
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Which one can form complex ?
A. Na
B. Cr
C. Li
D. K
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Second ionization potential of alkali metals are very high due to_______________?
A. being s-block elements
B. inert gas configurations
C. ns1 electronic configuration
D. being metals
Submitted by :- Jamil Ahmed
Sodium is not observed in +2 oxidation state because of its__________________?
A. high first ionization potential
B. high second ionization potential
C. high ionic radius
D. high electronegativity
Submitted by :- Jamil Ahmed
Which one of the following pairs shown diagonal relationship in the periodic table ?
A. Sodium and Lithium
B. Lithium and magnesium
C. Lithium and beryllium
D. Boron and Beryllium
Submitted by :- Jamil Ahmed