1
JEE Main 2023 (Online) 12th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : Boron is extremely hard indicating its high lattice energy.

Statement II : Boron has highest melting and boiling point compared to its other group members.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both Statement I and Statement II are incorrect
B
Statement I is incorrect but Statement II is correct
C
Statement I is correct but Statement II is incorrect
D
Both statement I and Statement II are correct
2
JEE Main 2023 (Online) 12th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

The density of alkali metals is in the order :

A
$$\mathrm{Na}<\mathrm{K}<\mathrm{Cs}<\mathrm{Rb}$$
B
$$\mathrm{K}<\mathrm{Na}<\mathrm{Rb}<\mathrm{Cs}$$
C
$$\mathrm{K}<\mathrm{Cs}<\mathrm{Na}<\mathrm{Rb}$$
D
$$\mathrm{Na}<\mathrm{Rb}<\mathrm{K}<\mathrm{Cs}$$
3
JEE Main 2023 (Online) 12th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

LIST I
Complex
LIST II
CFSE ($$\Delta_0$$)
A. $$\mathrm{[Cu(NH_3)_6]^{2+}}$$ I. $$-0.6$$
B. $$\mathrm{[Ti(H_2O)_6]^{3+}}$$ II. $$-2.0$$
C. $$\mathrm{[Fe(CN)_6]^{3-}}$$ III. $$-1.2$$
D. $$\mathrm{[NiF_6]^{4-}}$$ IV. $$-0.4$$

Choose the correct answer from the options given below:

A
A-I, B-IV, C-II, D-III
B
A-III, B-IV, C-I, D-II
C
A-II, B-III, C-I, D-IV
D
A-I, B-II, C-IV, D-III
4
JEE Main 2023 (Online) 12th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

JEE Main 2023 (Online) 12th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 24 English

The two products formed in above reaction are -

A
Butanal and acetaldehyde
B
Butanoic acid and acetic acid
C
Butanal and acetic acid
D
Butanoic acid and acetaldehyde
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