The product(s) formed from the following reaction is/are:
| 1. | RCOOH only | 2. | RCH2COOH only |
| 3. |  |
4. | RCOOH and RCH2COOH |
A monochromatic infrared range finder of power 1 milliwatt emits photons with a wavelength of 1000 nm in 0.1 seconds. The number of photons emitted in 0.1 seconds is:
(Given: h = \(6.626 \times 10^{-34} J~s\) , c = \(3 \times 10^8 m~s^{-1}, \) Avogadro number = \(6.022 \times 10^{23}\))
1. \(30 \times 10^{37}\)
2. \(5 \times 10^{14} \)
3. \(30 \times 10^{34} \)
4. \(5 \times 10^{11} \)
The correct order of spin-only magnetic moment for the given complexes is:
1. \([Co(H_2O)_6]^{2+} > [MnCl_6]^{3-} > [Fe(CN)_6]^{3-} \)
2. \([Fe(CN)_6]^{3-} >[Co(H_2O)_6]^{2+} > [MnCl_6]^{3-} \)
3. \([MnCl_6]^{3-} >[Fe(CN)_6]^{3-} >[Co(H_2O)_6]^{2+} \)
4. \([MnCl_6]^{3-} > [Co(H_2O_6]^{2+} > [Fe(CN)_6]^{3-} \)
(Consider \(x-\)the axis as the internuclear axis.)
| Column I | Column II | ||
| (P) | \(2 s+2 p_x \) | A. | \(\pi \text { bond }\) |
| (Q) | \(2 p_y+2 p_y\) | B. | \(\sigma \text { bond }\) |
| (R) | \(d_{x y}+p_z \) | C. | No bond formation |
| (S) | \(d_{xy}+p_{y}\) |
| P | Q | R | S | |
| 1. | A | B | C | A |
| 2. | B | A | C | A |
| 3. | C | A | B | C |
| 4. | B | A | B | A |
Identify the pair of Lanthanoides with one strong oxidant and one strong reductant:
| 1. | Ce(IV), Tb(IV) | 2. | Yb(II), Eu(II) |
| 3. | Eu(IV), Lu(III) | 4. | Ce(IV), Eu(II) |
Find the compound formed when water is added to an alkyne containing more than two carbon atoms in the presence of HgSO₄ and dilute H₂SO₄ at 333 K.
1. A vicinal diol
2. An aldehyde
3. An alcohol
4. A ketone
of X is \(1 s^2 2 s^2 2 p^4,\) what is the simplest formula for this compound?
| 1. | \(\mathrm{CaX}\) | 2. | \(\mathrm{CaX}_2 \) |
| 3. | \(\mathrm{Ca}_4 X_2\) | 4. | \(\mathrm{Ca}_2 \mathrm{X}_2\) |
1. \(\mathrm{\Delta U=14 ~kJ; \Delta(pV)=18~kJ} \)
2. \(\mathrm{\Delta U=14 ~kJ; \Delta(pV)=0.8~kJ} \)
3. \(\mathrm{\Delta U=14 ~kJ; \Delta(pV)=4~kJ} \)
4. \(\mathrm{\Delta U=14 ~kJ; \Delta(pV)=8.0~kJ} \)
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