NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1063 - 1069 of 1258

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Question number: 1063

» Classification of Elements & Periodicity » Valence

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MCQ▾

Question

The five successive ionization energies of the element are 800,2427,3658,25024 and 32824 KJ/mol respectively. The number of valence electron is.

Choices

Choice (4) Response

a.

2

b.

5

c.

4

d.

3

Question number: 1064

» Surface Chemistry » Colloidal State » Flocculation

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MCQ▾

Question

Which of the following has maximum flocculation value?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1065

» Surface Chemistry » Colloidal State » Classification of Colloids

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MCQ▾

Question

Water loving colloids are called as?

Choices

Choice (4) Response

a.

Lyophobic

b.

Hydrophilic

c.

Irreversible

d.

Hydrophobic

Question number: 1066

» Surface Chemistry » Adsorption » Physisorption and Chemisorption

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MCQ▾

Question

The chemisorption of on an activated surface becomes 40 % faster if temperature is raised from 500K to 1000K. Calculate the energy of activation?

Choices

Choice (4) Response

a.

6.5

b.

c.

d.

2.8

Question number: 1067

» Purification & Characteristics of Organic Compounds » Qualitative Analysis

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MCQ▾

Question

The sulphur content of Cystine is 26.7 % Given that Cystine contains teo sulphur atoms, what is the molecular weight of Cystine?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1068

» Solutions » Molarity

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MCQ▾

Question

Calculate the molarity of pure water

Choices

Choice (4) Response

a.

48.5 M

b.

49.6 M

c.

55.5 M

d.

36.5 M

Question number: 1069

» Surface Chemistry » Colloidal State » Classification of Colloids

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MCQ▾

Question

Bleeding of blood is stopped by the application of ferric chloride. This is because?

Choices

Choice (4) Response

a.

The ferric chloride seals the blood vessel

b.

The blood reacts and forms a soled which seals the blood vessel

c.

The blood is coagulated and thus, the blood vessel is sealed.

d.

The blood starts flowing in opposite direction