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
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 $$\mathrm{g}$$.
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