NSO Level 1- Science Olympiad (SOF) Class 10: Questions 821 - 826 of 986

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Question number: 821

» Acids, Bases and Salts

Edit
MCQ▾

Question

A drop of liquid sample was put on the pH paper. The colour of the pH paper turned Yellow. The liquid sample could be that of

Choices

Choice (4) Response

a.

Dilute hydrochloric acid

b.

Distilled water

c.

Ethanoic acid

d.

Lemon juice

Question number: 822

» Metals and Non - Metals

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match both the columns and mark the correct option from the codes given below:

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Nickel

(i)

Electronic agricultural materials

(B)

Chromium

(ii)

Aircraft turbine engines, nuclear power plants

(C)

Stainless steel

(iii)

Tools, surgical equipment.

(D)

Aluminium

(iv)

Electrical applications

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iii)
  • (iv)
  • (i)
  • (ii)

b.

  • (ii)
  • (iii)
  • (i)
  • (iv)

c.

  • (i)
  • (iii)
  • (ii)
  • (iv)

d.

  • (iv)
  • (i)
  • (ii)
  • (iii)

Passage

Direction: Read the following passage and answer the question.

A Metal is shiny, greyish metal that rusts in damp air.

Metal is an enigma-it rusts easily, yet it is the most important of all metals. Most is used to manufacture steel, used in civil engineering (reinforced concrete, girders etc. ) and in manufacturing.

Other hand non-metal most common appears as yellow crystals or powder.

Non-metal is used in the vulcanization of black rubber, as a fungicide and in black gunpowder.

Question number: 823 (1 of 3 Based on Passage) Show Passage

» Metals and Non - Metals

Edit
MCQ▾

Question

Among the following choices, elements that have low density, poor conductors of electricity are

Choices

Choice (4) Response

a.

Non-metal

b.

Metal

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 824 (2 of 3 Based on Passage) Show Passage

» Metals and Non - Metals

Edit
MCQ▾

Question

Among the following choices, the metal is

Choices

Choice (4) Response

a.

Potassium

b.

Iron

c.

Calcium

d.

Magnesium

Question number: 825 (3 of 3 Based on Passage) Show Passage

» Metals and Non - Metals

Edit
MCQ▾

Question

Among the following choices, the non-metal is

Choices

Choice (4) Response

a.

Helium

b.

Sulphur

c.

Neon

d.

Carbon

Question number: 826

» Acids, Bases and Salts

Edit
MCQ▾

Question

Three Students were given colorless liquids X, Y and Z of sea water, blood and a mixture of sea water and blood respectively. After testing liquids with pH paper, colour change for a mixture of seawater and blood on pH paper is

Choices

Choice (4) Response

a.

Turned Blue

b.

Turned Green

c.

No Changes

d.

Turned Red