NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 726 - 730 of 1258

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Question number: 726

» Solutions » Methods for Concentration of Solution

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Appeared in Year: 2016

MCQ▾

Question

Boric acid is an acid because its molecule

Choices

Choice (4) Response

a.

Contains replaceable H+ ion

b.

Combines with proton from water molecule

c.

Accepts OH from water releasing proton

d.

Gives up a proton

Question number: 727

» Biomolecules » Carbohydrates

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MCQ▾

Question

Which of the following trisaccharide?

Choices

Choice (4) Response

a.

Sucrose

b.

Raffinose

c.

Stachyose

d.

Question does not provide sufficient data or is vague

Question number: 728

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

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MCQ▾

Question

Chloroform is heated with Ag powder in laboratory what will be the product?

Choices

Choice (4) Response

a.

CH4

b.

Acetylene

c.

Ag2O

d.

CH2C12

Question number: 729

» Solutions » Abnormal Value of Molar Mass

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Appeared in Year: 2016

MCQ▾

Question

The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) in a 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 × ) is

Choices

Choice (4) Response

a.

0.013 %

b.

0.0060 %

c.

1.6 %

d.

0.77 %

Question number: 730

» Organic Compounds with Oxygen » Preparation, Properties and Reactions and Uses

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MCQ▾

Question

Which of the following statements are correct?

(1) A secondary alcohol on oxidation gives a ketone

(2) Ethanol reacts with cone. H2SO4 at 1800 C to yield ethylene

(3) Hydrogen gas is liberated when sodium is added to alcohol.

(4) Methanol reacts with iodine and sodium hydroxide to give a yellow precipitate of iodoform

In the following questions, more than one of the answers given are correct. Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct