Subject :NSO Class : Class 6
Subject :NSO Class : Class 3
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 3
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 2
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Subject :NSO Class : Class 7
The melting and boiling points of four
different substances are shown in the table.
The room temperature is 30°C.
Consider the following statements and
select the option which correctly identifies
true (T) and false (F) ones.
(i) Substance P is in solid state at room
temperature.
(ii) Substance Q is in liquid state at room
temperature.
(iii) Substance R is gas at –150°C and
solid at –220°C.
(iv) Substance S is in solid state at room
temperature.
| (i) | (ii) | (iii) | (iv) | |
|---|---|---|---|---|
| A | T | T | T | F |
| B | F | T | T | F |
| C | F | F | F | T |
| D | T | F | T | F |
i cant understand
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Subject :NSO Class : Class 5
Read the following statements and select
the correct option that identifies each
statement as true (T) or false (F) ones.
(i) A heavier object requires more
force to move.
(ii) Energy can be transferred from one
form to another.
(iii) Force always changes the shape
of an object.
(iv) A moving object has potential
energy.
| (i) | (ii) | (iii) | (iv) | |
|---|---|---|---|---|
| A | T | T | F | F |
| B | F | F | T | T |
| C | T | T | F | F |
| D | F | T | F | T |
why are options A and C the same?