NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1188 - 1194 of 1259

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Passage

DIRECTIONS: Read the passage given below and answer the questions that follows:

The tendency of an atom to attract shared pair of electrons towards itself is called electronegativity. both have tendency to attract electrons but electron affinity is for isolated atoms. Whereas electronegativity is for bonded atoms.

A polar covalent or ionic bond of depending on their tendency to attract bonded electron.

There is no unit of electronegativity as is tendency of a bonded atom not an energy

Question number: 1188 (2 of 3 Based on Passage) Show Passage

» Classification of Elements & Periodicity » Electron Gain Enthalpy

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MCQ▾

Question

Which of the following compound has highest value of bond length?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1189 (3 of 3 Based on Passage) Show Passage

» Classification of Elements & Periodicity » S, P, D and F Block Elements

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MCQ▾

Question

Give the correct order of electronegativity of central atom in following compounds –

The correct order is -

Choices

Choice (4)Response

a.

b.

c.

d.

ii > iii > i

Question number: 1190

» Classification of Elements & Periodicity » Ionization Enthalpy

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MCQ▾

Question

The electronic configurations for some neutral atoms are given below: Which of these is expected to have the highest second ionization enthalpy?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1191

» Atomic Structure » Photoelectric Effect

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MCQ▾

Question

The wavelengths of two photons are and respectively. What is the ratio of their energies?

Choices

Choice (4)Response

a.

b.

2

c.

4

d.

Question number: 1192

» Atomic Structure » Spectrum of Hydrogen Atom

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MCQ▾

Question

If an electron is present in level. How many spectral lines would be observed in case of H atom?

Choices

Choice (4)Response

a.

10

b.

15

c.

25

d.

20

Question number: 1193

» Atomic Structure » Nature of Electromagnetic Radiation

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MCQ▾

Question

For cathode rays’ the value of -

Choices

Choice (4)Response

a.

Is

b.

Is independent of the nature of the cathode and the gas filled in the discharge tube

c.

Is constant

d.

All a. , b. and c. are correct

Question number: 1194

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

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MCQ▾

Question

Arrange in increasing order of their size –

Choices

Choice (4)Response

a.

b.

c.

d.

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