NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 849 - 854 of 1259

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Question number: 849

» Atomic Structure » De-Broglie's Relationship

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MCQ▾

Question

If the radius of first Bohr orbit of hydrogen atom is ‘x’ then de-broglie wavelength of electron in 3rd orbit is nearly?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 850

» Basic Concepts in Chemistry » Concept of Atom, Molecule, Element and Compound

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MCQ▾

Question

Which one of the following is not a compound?

Choices

Choice (4)Response

a.

Marble

b.

Carborundum

c.

Quicklime

d.

Ozone

Question number: 851

» Organic Compounds with Halogens » Preparation, Properties and Reactions

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Appeared in Year: 2016

MCQ▾

Question

Which one of the following nitro-compounds does not react with nitrous acid?

Choices

Choice (4)Response

a.

Which of the following don't react with nitrous acid:Choice A

Which of the Following Don’T React with Nitrous Acid: Choice A

b.

Which of the following don't react with nitrous acid:Choice B

Which of the Following Don’T React with Nitrous Acid: Choice B

c.

Which of the following don't react with nitrous acid:Choice C

Which of the Following Don’T React with Nitrous Acid: Choice C

d.

None of the above

Question number: 852

» Basic Concepts in Chemistry » Physical Quantities and Measurements

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MCQ▾

Question

Phosphine decomposes to produce vapours of phosphorus and gas. What will be the change in moles when 100 moles of phosphine is decomposed?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 853

» Solutions » Van't Hoff Factor and Its Significance

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Appeared in Year: 2016

MCQ▾

Question

The van’t Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is

Choices

Choice (4)Response

a.

0

b.

2

c.

1

d.

3

Question number: 854

» Hydrocarbons » Alkynes » Addition of Hydrogen, Halogens, Water and Hydrogen Halides

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MCQ▾

Question

Product formed by the oxidation of acetylene in UV presence of alkaline KMnO4

Choices

Choice (4)Response

a.

CO2 + H2O

b.

Oxalic acid

c.

Oxyrane

d.

Glyoxal

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