1
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
At room temperature, the reaction between water and fluorine produces
A
HF and H2O2
B
HF, O2 and F2O2
C
F$$-$$, O2 and H+
D
HOF and HF
2
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
Which of the following is least thermally stable?
A
MgCO3
B
CaCO3
C
SrCO3
D
BeCO3
3
WB JEE 2018
MCQ (Single Correct Answer)
+2
-0.5
Change Language
$$[P]\buildrel {B{r_2}} \over \longrightarrow {C_2}{H_4}B{r_2}\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{N{H_3}}^{NaN{H_2}}} [Q]$$

$$[Q]\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{H{g^{2 + }},\Delta }^{20\% /{H_2}S{O_4}}} [R]\buildrel {Zn - Hg/HCl} \over \longrightarrow [S]$$

The species P, Q, R and S respectively are
A
ethene, ethyne, ethanal, ethane
B
ethane, ethyne, ethanal, ethene
C
ethene, ethyne, ethanal, ethanol
D
ethene, ethane, ethene, ethanal
4
WB JEE 2018
MCQ (Single Correct Answer)
+2
-0.5
Change Language
The number of possible organobromine compounds which can be obtained in the allylic bromination of 1-butene with N-bromosuccinimide is
A
1
B
2
C
3
D
4
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Graduate Aptitude Test in Engineering
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