Subject :NSO Class : Class 3
Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
Study the following table. Identify the change(s) listed under the wrong heading.
| Physical Changes | Chemical Changes |
| 1. Freezing ice cream | 4. Souring of food |
| 2. Whipping cream | 5. Dissolving sugar for making lemonade |
| 3. Squeezing oranges for juice | 6. Burning petrol in a car |
(A) 2 and 3
(B) 2 and 5
(C) 2
(D) 5
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Subject :NSO Class : Class 6
Ans 1:
Class : Class 10
the answer should be b because the earth wire should be connected to the metal case. Current caring wire should be connected with the fuse.
Ans 2:
Class : Class 3
Earth wire is always to prevent from electric shock when metal case comes in live wire, in that case current flow to earth and it prevents electric current pass through human body
Ans 3:
Class : Class 2
I think the answer should be B - if earth wire is connected to the fuse (which will burn out after a certain threshold of current passes thru' it) , it will not prevent a shock.
Ans 5:
Class : Class 9
The answer is B as metal case is only conductor and if fuse is connected it would be blown off
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Subject :NSO Class : Class 6
A piece of steel can be magnetised by stroking it with a magnet. When the magnet is moved in the direction shown, which poles are produced at X and at Y ?
| X | Y | |
| (A) | North | North |
| (B) | North | South |
| (C) | South | North |
| (D) | South | South |
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
