NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 835 - 840 of 1258

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Question number: 835

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

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MCQ▾

Question

The credit for the discovery of transuranic element goes to?

Choices

Choice (4) Response

a.

Hahn

b.

Seaborg

c.

Rutherford

d.

Curie

Question number: 836

» Solutions » Mole Fraction

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Appeared in Year: 2016

MCQ▾

Question

The molar conductivity of a 0.5 mol/dm3 solution of AgNO3 with electrolytic conductivity of at 298 K is 0.5 mol/dm3, AgNO3

Choices

Choice (4) Response

a.

28.8 S cm2/mol

b.

0.086 S cm2/mol

c.

11.52 S cm2/mol

d.

2.88 S cm2/mol

Question number: 837

» Hydrocarbons » Aromatic Hydrocarbons » Mechanism of Electrophilic Substitution

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Appeared in Year: 2016

MCQ▾

Question

In which of the following molecules, all atoms are coplanar?

Choices

Choice (4) Response

a.

Which structure is coplanar – Choice A

Which Structure is Coplanar – Choice A

Which structure is coplanar

b.

Which structure is coplanar – Choice B

Which Structure is Coplanar – Choice B

Which structure is coplanar

c.

Which structure is coplanar – Choice C

Which Structure is Coplanar – Choice C

Which structure is coplanar

d.

Which structure is coplanar – Choice D

Which Structure is Coplanar – Choice D

Which structure is coplanar

Question number: 838

» Atomic Structure » Photoelectric Effect

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MCQ▾

Question

The wavelength of electron waves in two orbits is 3: 5. The ratio of kinetic energy of electron will be?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 839

» Basic Concepts in Chemistry » Atomic and Molecular Masses

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MCQ▾

Question

Calculate the number of oxygen atoms in What would be the mass of having the same number of oxygen atoms?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 840

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

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MCQ▾

Question

Caffeine has a molecular weight of If it contains by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is?

Choices

Choice (4) Response

a.

6

b.

4

c.

3

d.

2