NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1373 - 1380 of 1484

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Question 1373

Question

MCQ▾

Which of the following group has maximum number of elements in Mendeleev՚s periodic table?

Choices

Choice (4)Response

a.

IV

b.

I

c.

II

d.

III

Question 1374

Question

MCQ▾

On moving down the group from F to I (Fuorine to Iodine) , which of the property decrease?

Choices

Choice (4)Response

a.

Electronegativity

b.

Oxidising agent

c.

Ionization energy

d.

All a., b. and c. are correct

Question 1375

Question

MCQ▾

An elements ‘x’ with atomic number 114 has recently been discovered. The name of thin elements is?

Choices

Choice (4)Response

a.

Ununfortium

b.

Flerovium

c.

Eka-lead

d.

Bohrium

Question 1376

Question

MCQ▾

Which of the following is the weakest acid?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1377

Question

MCQ▾

Name the reaction in which the addition and the removal of oxygen takes places simltaneously?

Choices

Choice (4)Response

a.

Precipitation reaction

b.

Oxidation reaction

c.

Reduction reaction

d.

Redox reaction

Question 1378

Question

MCQ▾

The diamagnetic species among the following is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1379

Question

MCQ▾

… acid is used in lead storage batteries?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 1380

Question

MCQ▾

The properties of the elements are periodic function of their atomic numbers. This statement was given by?

Choices

Choice (4)Response

a.

Mendeleev

b.

Moseley

c.

Bohr

d.

Dorberiner

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