1
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be :

A
Hg
B
Ag
C
Ga
D
Cs
2
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which of the following chemical reactions represents Hall-Heroult Process?

A
Cr2O3 + 2Al $$\to$$ Al2O3 + 2Cr
B
2Al2O3 + 3C $$\to$$ 4Al + 3CO2
C
FeO + CO $$\to$$ Fe + CO2
D
2[Au(CN)2]$$_{(aq)}^ - $$ + Zn(s) $$\to$$ 2Au(s) + [Zn(CN4)]2$$-$$
3
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct?

A
NaOH
B
NaCl
C
Na metal
D
Na2CO3
4
JEE Main 2022 (Online) 24th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

A
Baking soda
B
Soda ash
C
Washing soda
D
Caustic soda
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