1
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : $$\mathrm{BO}_3^{-3}$$ and $$\mathrm{SO}_3^{-2}$$ are not isostructural.

Reason : In $$\mathrm{SO}_3^{2-}$$ sulphur has one lone pair of electron.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
2
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : Tert-butyl methyl ether react with $$\mathrm{HBr}$$ to form tert butyl, $$\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Br}$$ and $$\mathrm{CH}_3-\mathrm{OH}$$, methanal.

Reason : It follows $$\mathrm{S}_{\mathrm{N}} 1$$ mechanism.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
3
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : A spherical water drops become flaton flatter surface.

Reason : It become flat due to gravity.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
4
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : Two sugar units joined by 1, 2-glycosidic bond in sucrose.

Reason : It contains $$\mathrm{C}_1$$-glucose and $$\mathrm{C}_2$$-fructose glycosidic bond.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
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