NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension: Questions 398 - 403 of 828

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Question number: 398

» Physics » Motion and Force

MCQ▾

Question

Which of the following cuboid will exert maximum pressure, when applied thrust is same?

shows image of cuboid

Shows Image of Cuboid

Find the cuboid which will exert maximum pressure, when applied thrust is same

Choices

Choice (4) Response

a.

a

b.

b

c.

c

d.

d

Question number: 399

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

Naphthalene is obtained from

Choices

Choice (4) Response

a.

coal tar

b.

light oil fraction

c.

ethane

d.

Question does not provide sufficient data or is vague

Question number: 400

» Biology » Air

MCQ▾

Question

The role of air pumped in waste water treatment plant is

Choices

Choice (4) Response

a.

to support the growth of aerobic bacteria

b.

to pressurize the water which has been treated

c.

to minimize the growth of aerobic bacteria

d.

to provide nutrient to bacteria

Question number: 401

» Chemistry » Acid Bases and Salt

MCQ▾

Question

Consider the following pairs

I. Lemon-citric acid II. Sting-acetic acid

III. Bauxite-aluminum oxide IV. Calamine-zinc oxide

Which pairs is/are not correctly matched?

Choices

Choice (4) Response

a.

II and IV

b.

I and IV

c.

II and III

d.

II, III and IV

Question number: 402

» Mathematics » Percentage

MCQ▾

Question

If x is inversely proportional to y and x is increase by 20%, then y decrease by (Note x and y have same initial value)

Choices

Choice (4) Response

a.

1213 %

b.

1723 %

c.

1623%

d.

2245%

Question number: 403

» Chemistry » Acid Bases and Salt

MCQ▾

Question

An element when burnt in air forms an oxide which is a good dehydrating agent. The oxide on dissolution in water gives its oxyacid. The oxide forms salt with caustic soda but not with sulphuric acid. The oxyacid of the element is

Choices

Choice (4) Response

a.

phosphoric acid

b.

hypo phosphorus acid

c.

boric acid

d.

phosphorus acid

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