This chapter is currently out of syllabus
1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following reactions does NOT belong to "Lassaigne's test"?

A
$\mathrm{Na}+\mathrm{X} \xrightarrow[\Delta]{ }+\mathrm{NaX}$
B
$2 \mathrm{CuO}+\mathrm{C} \xrightarrow[\Delta]{ } 2 \mathrm{Cu}+\mathrm{CO}_2$
C
$\mathrm{Na}+\mathrm{C}+\mathrm{N} \underset{\Delta}{\longrightarrow} \mathrm{NaCN}$
D
$2 \mathrm{Na}+\mathrm{S} \underset{\Delta}{\longrightarrow} \mathrm{Na}_2 \mathrm{~S}$
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

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

Assertion (A) : Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character.

Reason (R) : Lithium and Magnesium have similar properties due to diagonal relationship.

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

A
(A) is true but (R) is false.
B
(A) is false but (R) is true.
C
Both (A) and (R) are true and (R) is the correct explanation of (A).
D
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Given below are two statements : one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$ :

Assertion A : Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.

Reason R : The deep blue solution is due to the formation of amide.

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

A
Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are true but $$\mathbf{R}$$ is NOT the correct explanation of $$\mathbf{A}$$.
B
$$\mathbf{A}$$ is true but $$\mathbf{R}$$ is false
C
$$\mathbf{A}$$ is false but $$\mathbf{R}$$ is true
D
Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are true and $$\mathbf{R}$$ is the correct explanation of $$\mathbf{A}$$.
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Which one of the following statements is correct?

A
All enzymes that utilise ATP in phosphate transfer require $$\mathrm{Ca}$$ as the cofactor.
B
The bone in human body is an inert and unchanging substance.
C
$$\mathrm{Mg}$$ plays roles in neuromuscular function and interneuronal transmission.
D
The daily requirement of $$\mathrm{Mg}$$ and $$\mathrm{Ca}$$ in the human body is estimated to be 0.2 - 0.3 $$\mathrm{g}$$.
NEET Subjects
EXAM MAP