NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1168 - 1173 of 1258

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Question number: 1168

» Classification of Elements & Periodicity » Ionization Enthalpy

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MCQ▾

Question

I. E. of one H atom is . The I. E. of H atom in is -

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 1169

» Classification of Elements & Periodicity » Present Form of the Periodic Table

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MCQ▾

Question

The law of triads is applicable to -

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1170

» Atomic Structure » Bohr Model of Hydrogen Atom

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MCQ▾

Question

Atomic radius is the order of and nuclear radius is the order of . Calculate what fraction of atom is occupied by nucleus?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1171

» Classification of Elements & Periodicity » Present Form of the Periodic Table

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Noble gases have maximum electron affinity.

Reason (Ꭱ)

High electron affinity shows that the electron is loosely bonded to the atom.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 1172

» Atomic Structure » Dual Nature of Matter

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MCQ▾

Question

Naturally occuring boron consists of two isotops whose atomic weights are and The atomic weight of natural boron is . Calculate the percentage of each isotope in natural boron-

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1173

» Classification of Elements & Periodicity » Electron Gain Enthalpy

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MCQ▾

Question

Which of the following order is correct for acidic property?

Choices

Choice (4) Response

a.

b.

c.

d.