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

Identify the product ' B ' in the following sequence of reactions. Propanone $\xrightarrow{\mathrm{B_a}(\mathrm{OH})_2} A \xrightarrow[-\mathrm{H}_2 \mathrm{O}]{\Delta} B$

A
4-Hydroxy-4-methylpentan-2-one
B
2-methylpentan-3-one
C
2-methylpent-2-en-4-one
D
4-methylpent-3-en-2-one
2
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What time is required for 100 g of reactant to reduce to 25 g in a first order reaction having half life 5760 year?

A
4760 year
B
8640.26 year
C
2880.15 year
D
11526.48 year
3
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the value of standard enthalpy of formation of dihydrogen?

A
436.4 kJ
B
0 kJ
C
100.3 kJ
D
200.5 kJ
4
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the amount of energy associated with first orbit of monopositive helium ion? $\left[\mathrm{R}_{\mathrm{H}}=2.18 \times 10^{-18} \mathrm{~J}\right]$

A
$-1.9 \times 10^{-18} \mathrm{~J}$
B
$-4.36 \times 10^{-18} \mathrm{~J}$
C
$-6.54 \times 10^{-18} \mathrm{~J}$
D
$-8.72 \times 10^{-18} \mathrm{~J}$
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