NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 418 - 424 of 3111

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Question 418

Question MCQ▾

When n-Hexane heated at 773K under high pressure in the presence of there is the formation of

Choices

Choice (4)Response

a.

3-methyl pentane

b.

Benzene

c.

2-methyl pentane

d.

Toluene

Edit

Question 419

Question MCQ▾

An electron beam can undergo diffraction by crystals. Through what potential should a beam of electrons be accelerated so that its wavelength becomes equal to

Choices

Choice (4)Response

a.

33.3 volt

b.

63.3 volt

c.

43.3 volt

d.

53.3 volt

Edit

Question 420

Question MCQ▾

Which one of the following is not the correct value of R?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 421

Question MCQ▾

Decolonization of acidified potassium permanganate occurs when hydrogen peroxide is added to it. This is due to?

Choices

Choice (4)Response

a.

oxidation and reduction of

b.

oxidation of

c.

reduction of

d.

None of the above

Edit

Question 422

Question MCQ▾

The total spin resulting from a d5 configuration is –

Choices

Choice (4)Response

a.

b.

c.

1

d.

2

Edit

Question 423

Question MCQ▾

If the temperature of 1 mole of a gas is increased by 50 °C, calculate the change in kinetic energy of the system?

Choices

Choice (4)Response

a.

767.3 J

b.

623.5 J

c.

6230 J

d.

62.33 J

Edit

Question 424

Question MCQ▾

In which of the following reactions does hydrogen acts as an oxidizing agent?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit