1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$\mathrm{Mg}(\mathrm{OH})_2$$ is used as an antacid. If a person, suffering from acidity, produces $$2.5 \mathrm{~L}$$ of Gastric juice in a day, approximately how many antacid tablets, each containing $$600 \mathrm{~mg}$$ of $$\mathrm{Mg}(\mathrm{OH})_2$$, will be required to completely neutralise the whole $$\mathrm{HCl}$$ produced in the stomach in one day? (Gastric juice contains $$3.0 \mathrm{~g}$$ of $$\mathrm{HCl}$$ per L). (Atomic masses: $$\mathrm{Mg}=24 \mathrm{~g} / \mathrm{mol}, \mathrm{O}=16 \mathrm{~g} / \mathrm{mol}$$ & $$\mathrm{H}=1 \mathrm{~g} / \mathrm{mol}$$.)

A
10 tablets
B
4 tablets
C
7 tablets
D
6 tablets
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Given below are graphs showing the variation in velocity constant with temperature on Kelvin scale. Identify the graph which represents Arrhenius equation.

COMEDK 2023 Evening Shift Chemistry - Chemical Kinetics Question 31 English

A
D
B
C
C
A
D
B
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct statement describing the characteristics of $$\mathrm{C}_2$$ molecule.

A
Bond order $$=2.0 ; \quad$$ Paramagnetic in nature; One sigma and one pi bond formed.
B
Bond order $$=0 \quad \mathrm{C}_2$$ molecule is non-existent.
C
Bond order $$=2.0 ; \quad$$ Diamagnetic in nature; Both bonds formed are pi bonds.
D
Bond order $$=1.5 ; \quad$$ Paramagnetic in nature; Both bonds formed are sigma bonds $$(\sigma)$$.
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

One among the 4 Vitamins belonging to $$\mathrm{B}$$ Complex, can be stored in our body. Identify the Vitamin.

A
Pyridoxine
B
Thiamine
C
Cyanocobalamin
D
Riboflavin
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