1
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The energy of an electron in the ground state $$\mathrm{(n=1)}$$ for $$\mathrm{He}^{+}$$ ion is $$\mathrm{-x} \mathrm{~J}$$, then that for an electron in $$\mathrm{(n=2)}$$ state for $$\mathrm{Be}^{3+}$$ ion in $$\mathrm{J}$$ is

A
$$-x$$
B
$$-\frac{x}{9}$$
C
$$-4 x$$
D
$$-\frac{4}{9} x$$
2
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

In which of the following processes entropy increases?

A. A liquid evaporates to vapour.

B. Temperature of a crystalline solid lowered from $$130 \mathrm{~K}$$ to $$0 \mathrm{~K}$$.

C. $$2 \mathrm{NaHCO}_{3(\mathrm{~s})} \rightarrow \mathrm{Na}_2 \mathrm{CO}_{3(\mathrm{~s})}+\mathrm{CO}_{2(\mathrm{~g})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$$

D. $$\mathrm{Cl}_{2(g)} \rightarrow 2 \mathrm{Cl}_{(g)}$$

Choose the correct answer from the options given below:

A
A and C
B
A, B and D
C
A, C and D
D
C and D
3
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

Which reaction is NOT a redox reaction?

A
$$\mathrm{Zn}+\mathrm{CuSO}_4 \rightarrow \mathrm{ZnSO}_4+\mathrm{Cu}$$
B
$$2 \mathrm{KClO}_3+\mathrm{I}_2 \rightarrow 2 \mathrm{KIO}_3+\mathrm{Cl}_2$$
C
$$\mathrm{H}_2+\mathrm{Cl}_2 \rightarrow 2 \mathrm{HCl}$$
D
$$\mathrm{BaCl}_2+\mathrm{Na}_2 \mathrm{SO}_4 \rightarrow \mathrm{BaSO}_4+2 \mathrm{NaCl}$$
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II.

List I
(Quantum Number)
List II
(Information provided)
A. $$\mathrm{m_l}$$ I. Shape of orbital
B. $$\mathrm{m_s}$$ II. Size of orbital
C. I III. Orientation of orbital
D. n IV. Orientation of spin of electron

Choose the correct answer from the options given below :

A
A-I, B-III, C-II, D-IV
B
A-III, B-IV, C-I, D-II
C
A-III, B-IV, C-II, D-I
D
A-II, B-I, C-IV, D-III
EXAM MAP