1
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The right option for the mass of $$\mathrm{CO}_{2}$$ produced by heating $$20 \mathrm{~g}$$ of $$20 \%$$ pure limestone is

(Atomic mass of $$\mathrm{Ca}=40$$ )

$$\left[\mathrm{CaCO}_{3} \stackrel{1200 \mathrm{~K}}{\longrightarrow} \mathrm{CaO}+\mathrm{CO}_{2}\right]$$

A
1.76 g
B
2.64 g
C
1.32 g
D
1.12 g
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The relation between $$\mathrm{n}_{\mathrm{m}},\left(\mathrm{n}_{\mathrm{m}}=\right.$$ the number of permissible values of magnetic quantum number $$(\mathrm{m})$$) for a given value of azimuthal quantum number $$(l)$$, is

A
$$l=2 \mathrm{n}_{\mathrm{m}}+1$$
B
$$\mathrm{n}_{\mathrm{m}}=2 l^{2}+1$$
C
$$\mathrm{n}_{\mathrm{m}}=l+2$$
D
$$l=\frac{\mathrm{n}_{\mathrm{m}}-1}{2}$$
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The stability of $$\mathrm{Cu}^{2+}$$ is more than $$\mathrm{Cu}^{+}$$ salts in aqueous solution due to -

A
enthalpy of atomization.
B
hydration energy.
C
second ionisation enthalpy.
D
first ionisation enthalpy.
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following reactions will NOT give primary amine as the product?

A
$$\mathrm{CH}_{3} \mathrm{CN} \underset{\left(\text {ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}\right.}{\stackrel{\text { (i) } \mathrm{LiAlH}_{4}}{\longrightarrow}}$$ Product
B
$$\mathrm{CH}_{3} \mathrm{NC} \underset{\left(\text {ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}\right.}{\stackrel{\text { (i) } \mathrm{LiAlH}_{4}}{\longrightarrow}}$$ Product
C
$$\mathrm{CH}_{3} \mathrm{CONH_2} \underset{\left(\text {ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}\right.}{\stackrel{\text { (i) } \mathrm{LiAlH}_{4}}{\longrightarrow}}$$ Product
D
$$\mathrm{CH}_{3} \mathrm{CONH}_{2} \stackrel{\mathrm{Br}_{2} / \mathrm{KOH}}{\longrightarrow}$$ Product
EXAM MAP