NSO Level 1- Science Olympiad (SOF) Class 10: Questions 704 - 709 of 986

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Passage

Directional: Read the passage carefully and the answer the below two question

Light travels from air into an optical fiber with an index of refraction of 1.44

Question number: 704 (1 of 2 Based on Passage) Show Passage

» Light - Reflection and Refraction

Edit
MCQ▾

Question

If the angle of incidence on the end of the fiber is what is the angle of refraction inside the fiber?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 705 (2 of 2 Based on Passage) Show Passage

» Light - Reflection and Refraction

Edit
MCQ▾

Question

In which direction does the light bend?

Choices

Choice (4)Response

a.

Does not bend

b.

Bend toward the medium

c.

Bend toward the medium

d.

Bend toward the normal

Question number: 706

» Acids, Bases and Salts

Edit
MCQ▾

Question

If pH of solution is it means that, it is,

Choices

Choice (4)Response

a.

Acidic

b.

Basic

c.

Neutral

d.

Question does not provide sufficient data or is vague

Question number: 707

» Chemical Reactions and Equation

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match both the columns and mark the correct option using the coded given below.

List-Ⅰ (Column I)List-Ⅱ (Column II)

(A)

Heating magnesium nitrate

(i)

Carbon dioxide

(B)

Heating washing soda

(ii)

Oxygen

(C)

Heating potassium nitrate

(iii)

Oxygen

(D)

Heating ferrous sulphate

(iv)

Ferric oxide

Choices

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

a.

  • (iv)
  • (i)
  • (iii)
  • (ii)

b.

  • (iv)
  • (iii)
  • (ii)
  • (i)

c.

  • (iii)
  • (i)
  • (iii)
  • (iv)

d.

  • (iii)
  • (i)
  • (ii)
  • (iv)

Question number: 708

» Light - Reflection and Refraction

Edit
MCQ▾

Question

The strength of electromagnet can be increased by introducing a soft iron core

Choices

Choice (4)Response

a.

Inside the coil

b.

Round the coil

c.

Outside the coil

d.

Above the coil

Question number: 709

» Chemical Reactions and Equation

Edit
MCQ▾

Question

Aluminum filings were added to a solution of Zinc sulphate. After miniutes, it was observed that the colour solution changed and a deposit at the bottom of the beaker was observed. The colour of the solution and that of the deposit would respectively be

Choices

Choice (4)Response

a.

Yellow and green

b.

Brown and blue

c.

Colorless

d.

Red and greenish-blue

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