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1
MHT CET 2025 21st April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following gases causes depletion in ozone layer?

A
He
B
NO
C
$\quad \mathrm{CO}_2$
D
$\quad \mathrm{H}_2$
2
MHT CET 2025 20th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is effectively used to remove E. coli bacteria from water?

A
Silver nanoparticles
B
Carbon black nanoparticles
C
$\quad \mathrm{TiO}_2$ nanoparticles
D
Silicon nanoparticles
3
MHT CET 2025 19th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which solvent from following is used in order to avoid creation of waste and pollution of air?

A
$\quad \mathrm{CH}_2 \mathrm{Cl}_3$
B
$\mathrm{CHCl}_3$
C
$\quad \mathrm{CCl}_4$
D
$\mathrm{H}_2 \mathrm{O}$
4
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following reactions exhibits good atom economy according to the principles of green chemistry?

A
$\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}+\mathrm{NaBr}+\mathrm{H}_2 \mathrm{SO}_4 \longrightarrow \mathrm{C}_4 \mathrm{H}_9 \mathrm{Br}+\mathrm{NaHSO}_4+\mathrm{H}_2 \mathrm{O}$
B
$\mathrm{C}_2 \mathrm{H}_4+\mathrm{H}_2 \xrightarrow{\mathrm{Ni}} \mathrm{C}_2 \mathrm{H}_6$
C
$\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}+\mathrm{C}_2 \mathrm{H}_5 \mathrm{COOH} \longrightarrow \mathrm{C}_2 \mathrm{H}_5 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{H}_2 \mathrm{O}$
D
$\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}+\mathrm{SOCl}_2 \xrightarrow{\Delta} \mathrm{C}_4 \mathrm{H}_9 \mathrm{Cl}+\mathrm{HCl}+ \mathrm{SO_2}$
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