NSO Level 1- Science Olympiad (SOF) Class 10: Questions 83 - 88 of 986

Access detailed explanations (illustrated with images and videos) to 986 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 450.00 or

How to register?

Question number: 83

» Mental Ability

Edit
MCQ▾

Question

Identify the wrong number in the series:

Choices

Choice (4) Response

a.

67

b.

13

c.

43

d.

6

Question number: 84

» Acids, Bases and Salts

Edit
MCQ▾

Question

Which out of the following properties are shown by ?

(i) It turns red litmus blue.

(ii) The grater the concentration of then stronger the base.

(iii) It turns blue litmus red.

(iv) Break up to form .

Which of the following is true?

Choices

Choice (4) Response

a.

(i), (iv) & (ii) are correct.

b.

(i), (iv) & (iii) are correct.

c.

(i), (ii) & (iii) are correct.

d.

None of the above

Question number: 85

» Chemical Reactions and Equation

Edit
MCQ▾

Question

How can we minimize the rate of rancidity?

Choices

Choice (4) Response

a.

Flushing nitrogen gas into packets of oily food during packaging.

b.

By the souring of milk

c.

Adding oxidants to oily food stuff

d.

By adding oil.

Question number: 86

» Chemical Reactions and Equation

Edit
MCQ▾

Question

Which of the following is an example of combination reaction?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 87

» Chemical Reactions and Equation

Edit
MCQ▾

Question

Which of the following is an example of exothermic reaction?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 88

» Chemical Reactions and Equation

Edit
MCQ▾

Question

Corrosion of the iron occurs in the presence of________

Choices

Choice (4) Response

a.

Sugar and Water

b.

Water and Air

c.

Gas and Sugar

d.

Gas and Water