1
JEE Main 2024 (Online) 27th January Morning 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) : Melting point of Boron (2453 K) is unusually high in group 13 elements.

Reason (R) : Solid Boron has very strong crystalline lattice.

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

A
Both (A) and (R) are correct but (R) Is not the correct explanation of (A)
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
2
JEE Main 2024 (Online) 27th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Cyclohexene

JEE Main 2024 (Online) 27th January Morning Shift Chemistry - Basics of Organic Chemistry Question 87 English

is ________ type of an organic compound.

A
Benzenoid aromatic
B
Benzenoid non-aromatic
C
Acyclic
D
Alicyclic
3
JEE Main 2024 (Online) 27th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Yellow compound of lead chromate gets dissolved on treatment with hot $$\mathrm{NaOH}$$ solution. The product of lead formed is a :

A
Tetraanionic complex with coordination number six
B
Neutral complex with coordination number four
C
Dianionic complex with coordination number six
D
Dianionic complex with coordination number four
4
JEE Main 2024 (Online) 27th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement (I) : Aqueous solution of ammonium carbonate is basic.

Statement (II) : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on $$K_a$$ and $$K_b$$ value of acid and the base forming it.

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 correct
B
Statement I is correct but Statement II is incorrect
C
Both Statement I and Statement II are incorrect
D
Statement I is incorrect but Statement II is correct
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