NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 225 - 232 of 1259

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Question number: 225

» P-Block Elements Group 13 to 18 » Group 13 » Boron

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MCQ▾

Question

Which one of the following minerals of borax is also known as Tincal or Suhaga?

Choices

Choice (4)Response

a.

Magnesium

b.

Colemanite

c.

Boric acid

d.

Borax

Question number: 226

» P-Block Elements Group 13 to 18 » Groupwise Study of the P - Block Elements

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MCQ▾

Question

Which tetra halide does not act as Lewis acid?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 227

» P-Block Elements Group 13 to 18 » Group 15 » Nitrogen

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MCQ▾

Question

Extra pure nitrogen can be obtained by heating?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 228

» P-Block Elements Group 13 to 18 » Groupwise Study of the P - Block Elements

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MCQ▾

Question

Ionization enthalpy for the elements of group 13 follows the order?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 229

» P-Block Elements Group 13 to 18 » Group 13 » Boron

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MCQ▾

Question

Boron cannot form which one of the following anions?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 230

» P-Block Elements Group 13 to 18 » Group 15 » Oxides and Oxoacids of Phosphorus

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MCQ▾

Question

One mole of H3PO3 on reaction with excess of NaOH gives?

Choices

Choice (4)Response

a.

One mole of

b.

One mole of

c.

Two moles of

d.

Two moles of

Question number: 231

» P-Block Elements Group 13 to 18 » Group 15 » Phosphorus

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MCQ▾

Question

White phosphorus on reaction with limewater gives calcium salt of an acid (A) along with a gas (X). Which of the following is correct?

Choices

Choice (4)Response

a.

The bond angle in (X) is less than that in case of ammonia

b.

(X) is more basic than ammonia

c.

(A) on heating gives (X) and O2

d.

(A) is dibasic acid

Question number: 232

» P-Block Elements Group 13 to 18 » Group 15 » Nitrogen

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MCQ▾

Question

If O2 is removed from the formula of anhydride of HNO2, then the formula of the resulting compound satisfies which of the following properties?

Choices

Choice (4)Response

a.

It supports combustion

b.

It is paramagnetic

c.

It cannot react with red hot copper

d.

It produces tears in eyes

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