1
WB JEE 2023
MCQ (Single Correct Answer)
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-0.5
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Nickel combines with a uninegative monodentate ligand (X$$^-$$) to form a paramagnetic complex [NiX$$_4$$]$$^{2-}$$. The hybridisation involved and number of unpaired electrons present in the complex are respectively

A
sp$$^3$$, two
B
dsp$$^2$$, zero
C
dsp$$^2$$, one
D
sp$$^3$$, one
2
WB JEE 2023
MCQ (Single Correct Answer)
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WB JEE 2023 Chemistry - Aldehyde and Ketone Question 2 English

'$$\underline{\underline L} $$' in the above sequence of reaction is/are (where L $$\ne$$ M $$\ne$$ N)

A
Benzaldehyde
B
Methyl benzoate
C
Benzoyl chloride
D
Benzonitrile
3
WB JEE 2023
MCQ (Single Correct Answer)
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WB JEE 2023 Chemistry - Hydrocarbons Question 1 English

'$$\underline G $$' in the above sequence of reactions is

A
$${(C{H_3})_2}CHCOOC{H_2}C{H_3}$$
B
$$C{H_3}C{H_2}C{H_2}COOC{H_2}C{H_3}$$
C
$$C{H_3}C{H_2}COOC{H_2}C{H_2}C{H_3}$$
D
$$C{H_3}C{H_2}COOCH{(C{H_3})_2}$$
4
WB JEE 2023
MCQ (Single Correct Answer)
+2
-0.5
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Case - 1 : An ideal gas of molecular weight M at temperature T.

Case - 2 : Another ideal gas of molecular weight 2M at temperature T/2.

Identify the correct statement in context of above two cases.

A
Average kinetic energy and average speed will be the same in the two cases.
B
Both the averages are halved.
C
Both the averages are doubled.
D
Only average speed is halved in the second case.
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