1
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For a zero order reaction $\mathrm{A} \longrightarrow$ product. Conc. of $A$ decreases from $0.8 \mathrm{~mol} \mathrm{~dm}^{-3}$ to $0.2 \mathrm{~mol} \mathrm{~dm}^{-3}$ in 6 minute. What is rate constant of the reaction?

A
$0.01 \mathrm{~mol} \mathrm{~dm}^{-3}$ minute ${ }^{-1}$
B
$1.0 \mathrm{~mol} \mathrm{~dm}^{-3}$ minute ${ }^{-1}$
C
$0.1 \mathrm{~mol} \mathrm{~dm}^{-3}$ minute ${ }^{-1}$
D
$1.66 \mathrm{~mol} \mathrm{~dm}^{-3}$ minute ${ }^{-1}$
2
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Find value of Q from following equations.

(i) $\mathrm{C}_{(\mathrm{s})}+\mathrm{O}_{2(\mathrm{~g})} \longrightarrow \mathrm{CO}_{2(\mathrm{~g})} \Delta \mathrm{H}=\mathrm{QkJ}$

(ii) $\mathrm{C}_{(\mathrm{s})}+\frac{1}{2} \mathrm{O}_{2(8)} \longrightarrow \mathrm{CO}_{2(8)} \Delta \mathrm{H}=-\mathrm{x} \mathrm{kJ}$

(iii) $\mathrm{C}_{(\mathrm{s})}+\frac{1}{2} \mathrm{O}_{2(\mathrm{~s})} \longrightarrow \mathrm{CO}_{2(\mathrm{~g})} \Delta \mathrm{H}=-\mathrm{ykJ}$

A
$\mathrm{-(x+y) k J}$
B
$(\mathrm{x}-\mathrm{y}) \mathrm{kJ}$
C
$\frac{-\mathrm{x}+\mathrm{y}}{2} \mathrm{~kJ}$
D
$\frac{\mathrm{x}+\mathrm{y}}{2} \mathrm{~kJ}$
3
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

"A given compound always contains the same proportion of elements" is a statement of -

A
Law of combining volumes of gases
B
Law of conservation of mass
C
Law of multiple proportions
D
Law of definite proportions
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the correct decreasing order of thermal stability from following.

A
$\mathrm{CF}>\mathrm{ICl}>\mathrm{Br}>\mathrm{BrCl}$
B
$\mathrm{BrCl}>\mathrm{Br}>\mathrm{ICl}>\mathrm{ClF}$
C
$\mathrm{CF}>\mathrm{Br}>\mathrm{BrCl}>\mathrm{ICl}$
D
$\mathrm{ClF}>\mathrm{BrCl}>\mathrm{Br}>\mathrm{ClF}$
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