Question

length and breadth of a rectangular wire line cm and 7 cm respectively if the wire is bent into square find the length of its side ​

Answer 1

Answer:

ASSERTION: Solids have more density than liquids.

REASON: Solids have more inter particle spaces.

22. ASSERTION: Solid carbon dioxide is called dry ice.

REASON: Carbon dioxide changes to liquid.

23. ASSERTION: Ice floats on water.

REASON: Ice has lower density than water, because air is trapped in it.

24. ASSERTION: We feel warm when we keep acetone on our palm.

REASON: Acetone releases heat.

25. ASSERTION: Love is not state of matter.

REASON: It does not occupy space and do not have mass.

26. ASSERTION: Sponge can change its shape, still it is considered as solid.

REASON: They regain their shape when force is removed.

27. ASSERTION: Liquids lack the property of diffusion.

REASON: Particles in solids are very loosely packed.

28. ASSERTION: We should wear cotton clothes in summer.

REASON: Evaporation increases with increase in temperature.

29. ASSERTION: Solids do not have fixed shape and volume.

REASON: Inter-particle spaces are maximum in solids.

30. ASSERTION: A gas fills completely the vessel in which it is kept.

REASON: A gas is not compressible.

Question (31-40) are Case study based question 5+5=Step-by-step explanation:

ASSERTION: Solids have more density than liquids.

REASON: Solids have more inter particle spaces.

22. ASSERTION: Solid carbon dioxide is called dry ice.

REASON: Carbon dioxide changes to liquid.

23. ASSERTION: Ice floats on water.

REASON: Ice has lower density than water, because air is trapped in it.

24. ASSERTION: We feel warm when we keep acetone on our palm.

REASON: Acetone releases heat.

25. ASSERTION: Love is not state of matter.

REASON: It does not occupy space and do not have mass.

26. ASSERTION: Sponge can change its shape, still it is considered as solid.

REASON: They regain their shape when force is removed.

27. ASSERTION: Liquids lack the property of diffusion.

REASON: Particles in solids are very loosely packed.

28. ASSERTION: We should wear cotton clothes in summer.

REASON: Evaporation increases with increase in temperature.

29. ASSERTION: Solids do not have fixed shape and volume.

REASON: Inter-particle spaces are maximum in solids.

30. ASSERTION: A gas fills completely the vessel in which it is kept.

REASON: A gas is not compressible.

Question (31-40) are Case study based question 5+5=

Answer 2

Answer:

length of rectangle =9cm

breadth of rectangle=7cm

according to question

perimeter of rectangle=perimeter of square

$2(l+b)=4al+b=2a(9+7)/2=a(16)/2=aa=8cm$

therefore,

length of sides of square is 8cm