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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4

Ans 3:

Class : Class 5
the answer is d

Ans 4:

Class : Class 5
yes you are right

Ans 5:

Class : Class 4
D is correct

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
C

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Subject :NSO    Class : Class 7

Which of the following statements are correct?
I. The tangy taste of cola drinks is due to carbonic acid which is an organic acid.
II. Inorganic acids are prepared artificially in the industries and are extremely corrosive.
III. Hydrochloric acid reacts with metals to varying degrees therefore, it is stored in glass bottles.
IV. Organic acids are weak acids and are used as food supplements.

A I, II and III only
B I and IV only
C II and IV only
D All of these


Why is carbonic acid inorganic even though all organic acids have carbon in their formulae and H2CO3 is the formula of carbonic acid?

Ans 1:

Class : Class 7
Hydrocloric acid is very corrosive and reacts with metals . So HCL is stored in glass bottles because it dont causes damage to it . ..........SO 3 statement should be true and their explanation is wrong .

Ans 2:

Class : Class 7
Hcl doesen't react with metals......Sulphuric acid does

Ans 3:

Class : Class 5
You all are correct

Ans 4:

Class : Class 8
Hcl doesnt react with glass. The explanation is wrong

Ans 5:

Class : Class 8
hcl reacts with metals too

Ans 6:

Class : Class 7
Q is wrong since option 1 is false, rest all are true

Ans 7:

Class : Class 8
Hcl reacts with metals also

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
i gave the correct answer but in the result they are showing that it is wrong.it is the same case with some other questions too.Please make a note that you correct it,thank you.

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 6
Stapler ( option D ) is the odd one out as it is a third class lever i.e. effort is between the load and fulcrum .

Ans 3:

Class : Class 5
yes because the stapler is a third class lever

Ans 4:

Class : Class 6
option D is correct because stapler is 3rd class lever

Ans 5:

Class : Class 5

Ans 6:

Class : Class 5

Ans 7:

Class : Class 6

Ans 8:

Class : Class 7
The answer is D because the stapler is the odd one out

Ans 9:

Class : Class 6
What is type of Option A?

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
A

Ans 3: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
ans : A

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
i m not getting the answer

Ans 2:

Class : Class 3
D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
It should be T/21 only as T is the total time and no of times it passes Y is 21.Therefore the answer is T/21

Ans 4:

Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10

Ans 5:

Class : Class 6

Ans 6:

Class : Class 4
yes I also agree with you

Ans 7:

Class : Class 7
I agree with you

Ans 8:

Class : Class 6
throughout the time period or the 21 swings the pendulum will pass through the point Y 21 times. so the answer is B(t/21)

Ans 9:

Class : Class 7
Yes it should be t/10 as the pendulum will pass through point y twice in its one revolution...... so the the time period should be t/10

Ans 10:

Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10

Ans 11:

Class : Class 8
it should be t/10 only as during time period the pendulum will pass through the point y twice.so the time period will be t/10

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