1
JEE Main 2023 (Online) 13th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The covalency and oxidation state respectively of boron in $$\left[\mathrm{BF}_{4}\right]^{-}$$, are :

A
3 and 4
B
4 and 3
C
4 and 4
D
3 and 5
2
JEE Main 2023 (Online) 13th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : Tropolone is an aromatic compound and has $$8 \pi$$ electrons.

Statement II : $$\pi$$ electrons of $$ > \mathrm{C}=\mathrm{O}$$ group in tropolone is involved in aromaticity.

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

A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Both Statement I and Statement II are true
3
JEE Main 2023 (Online) 13th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

1 - Bromopropane is reacted with reagents in List I to give product in List II

LIST I - Reagent LIST II - Product
A. $$\mathrm{KOH}$$ (alc) I. Nitrile
B. $$\mathrm{KCN}$$ (alc) II. Ester
C. $$\mathrm{AgNO_2}$$ III. Alkene
D. $$\mathrm{H_3CCOOAg}$$ IV. Nitroalkane

Choose the correct answer from the options given below:

A
A-I, B-II, C-III, D-IV
B
A-IV, B-III, C-II, D-I
C
A-III, B-I, C-IV, D-II
D
A-I, B-III, C-IV, D-II
4
JEE Main 2023 (Online) 13th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Order of acidic nature of the following compounds is A > B > C.

JEE Main 2023 (Online) 13th April Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 38 English

Reason R : Fluoro is a stronger electron withdrawing group than Chloro group.

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

A
Both A and R are correct but R is NOT the correct explanation of A
B
A is false but R is true
C
A is true but R is false
D
Both A and R are correct and R is the correct explanation of A
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