NSO Level 1- Science Olympiad (SOF) Class 10: Questions 924 - 927 of 986

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Question 924

Question

MCQ▾

Zinc 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.

Colorless

c.

Red and greenish-blue

d.

Green and reddish-brown

Question 925

Question

Match List-Ⅰ List-Ⅱ▾

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

List-Ⅰ (Column I)List-Ⅱ (Column II)
(A)

Appy fizz

(i)

6.7

(B)

Blood

(ii)

3.5

(C)

Pond Water

(iii)

8.2

(D)

Milk

(iv)

7.4

Choices

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

a.

  • (iii)
  • (i)
  • (ii)
  • (iv)

b.

  • (ii)
  • (iv)
  • (iii)
  • (i)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (i)
  • (ii)
  • (iv)
  • (iii)

Question 926

Question

MCQ▾

Read the given statements and mark the correct option.

Statement 1: pH of hydrochloride acid solution is less than that of Lemon juice solution of the same concentrate.

Statement 2: Pure alcohol has a less pH value then water.

Choices

Choice (4)Response

a.

Only statement 2 is Correct

b.

Only statement 1 is Correct

c.

Question does not provide sufficient data or is vague

d.

None of the above

Passage

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

Optical fibers are generally composed of silica, with an index of refraction around

Question 927 (1 of 2 Based on Passage)

Question

MCQ▾

How long will it take for that light to travel from St. Petersburg, Florida to Anchorage, Alaska?

Choices

Choice (4)Response

a.

20.2 s

b.

39 s

c.

29.2 s

d.

32 s

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