1
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the percentage by mass of oxygen in NaOH ? (Atomic mass of $\mathrm{Na}=23 \mathrm{u}, \mathrm{O}=16 \mathrm{u}, \mathrm{H}=1 \mathrm{u}$ )

A
16
B
20
C
40
D
60
2
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is value of percent atom economy when reactants having sum of formula weight 78 u results in the formation of a product with formula weight 65 u ?

A
$70 \%$
B
$83 \%$
C
$78 \%$
D
$65 \%$
3
MHT CET 2024 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

How many molecules of carbon dioxide are formed when 0.6 g carbon is burnt in air?

A
$3.01 \times 10^{22}$
B
$2.01 \times 10^{23}$
C
$6.02 \times 10^{22}$
D
$5.02 \times 10^{23}$
4
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following pair of compounds cannot demonstrate law of multiple proportion?

A
$\mathrm{NO}, \mathrm{NO}_2$
B
$\mathrm{CO}, \mathrm{CO}_2$
C
$\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{O}_2$
D
$\mathrm{Na}_2 \mathrm{S}, \mathrm{NaF}$
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