Question & Answers
Here we provide detailed text solution for NEET Previous Years Solutions. And we provide video explanation for each and every question separately.
Chemistry
In one molal solution that contains 0.5 mole of a solute, there is
(1) 500 g of solvent
(2) 100 mL of solvent
(3) 1000 g of solvent
(4) 500 mL of solvent
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Q. A cylinder contains hydrogen gas at pressure of 249 kPa and temperature 27°C. Its density is: (R = 8.3 J mol–1 K–1)
(1) 0.1 kg/m3 (2) 0.02 kg/m3 (3) 0.5 kg/m3 (4) 0.2 kg/m3
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Q. A spherical conductor of radius 10 cm has a charge of 3.2 × 10-7 C distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere?
(1) 1.28 × 107 N/C
(2) 1.28 × 104 N/C
(3) 1.28 × 106 N/C
(4) 1.28 × 105 N/C
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Q. What is the IUPAC name of the organic compound formed in the following chemical reaction?
(1) 2-methyl propan-2-ol (2) pentan-2-ol
(3) pentan-3-ol (4) 2-methyl butan-2-ol
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Q. Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as:
(1) Cross Cannizzaro’s reaction (2) Cross Aldol condensation
(3) Aldol condensation (4) Cannizzaro’s reaction
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Q. A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?
(1) –R effect of –CH3 groups (2) Hyperconjugation
(3) –I effect of –CH3 groups (4) + R effect of –CH3 groups
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