NSO Level 1- Science Olympiad (SOF) Class 10: Questions 665 - 668 of 986

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Question number: 665

» Acids, Bases and Salts

Edit
MCQ▾

Question

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

Choices

Choice (4) Response

a.

Turned Green

b.

No Changes

c.

Turned Red

d.

Turned Blue

Question number: 666

» Light - Reflection and Refraction

Edit
MCQ▾

Question

The speed of light in an unknown medium is measured to be

What is the index of refraction of the medium?

Choices

Choice (4) Response

a.

0.12

b.

1.09

c.

2.1

d.

2.03

Question number: 667

» Magnetic Effects of Electric Current

Edit
MCQ▾

Question

Read the given statements for properties of magnetic field and mark the correct option

Statement 1: The magnitude of magnetic field increases with increase in electric current and decreases with decrease in electric current

Statement 2: Magnetic field lines are always in series to each other

Choices

Choice (4) Response

a.

Statements 1 and 2 are correct

b.

Only statement 1 is correct

c.

Statements 1 and 2 are incorrect

d.

Only statement 2 is correct

Question number: 668

» Our Environment and Its Management

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match the traditional water harvesting system pf column I with the corresponding states in column II and select the correct option from the given below.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Ooranis

(i)

Tamil Nadu

(B)

Dongs

(ii)

Assam

(C)

Virdas

(iii)

Arunachal Pradesh

(D)

Apatani

(iv)

Gujarat

Choices

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

a.

  • (i)
  • (iv)
  • (iii)
  • (ii)

b.

  • (i)
  • (iii)
  • (iv)
  • (ii)

c.

  • (i)
  • (ii)
  • (iv)
  • (iii)

d.

  • (iv)
  • (ii)
  • (iii)
  • (i)