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Class -IX. Assignment MATTER IN OUR SURROUNDINGS 1. Fill in the blanks. (1) Anything that occupies space and has mass is ...... (ii) Matter exists in three states.............,.............. and ....... (iii) The mass per unit volume of a substance is called ............ (iv) The temperature at which a solid melts to become a liquid is called its ............ (V) The temperature at which a liquid starts boiling at the atmospheric pressure is known as its.................... (vi) When ice melts, there is a................in volume. (vii) Increase in pressure,..........the boiling point of water. (viii) The phenomenon of change of a liquid into gas at any temperature below its boiling point is called ............. (ix) The intermixing of particles of two substances on their own is called .......... (x) The sun and the stars glow because of the presence of .... ... in them. 2. Mark the statements true or false (i) Evaporation causes cooling. (ii) Boiling is a surface phenomenon. (iii) Evaporation is a bulk phenomenon. (iv) The unit of pressure is Pascal (Pa). (V) The melting point of ice is 373 K. (vi) Liquids have a fixed volume but they have no fixed shape. (vii) Gases do not flow. (viii) The spaces between the molecules are the minimum in solids. (ix) The forces of attraction between the molecules are negligible in solids. (x) The movement of molecules is the minimum in solids.
  • 2 answers

Samriddhi Yadav 3 years, 8 months ago

1 Matter 2 Solid,liquid and gas 3 Density 4 Melting point 5 Boiling point 6 reduction 7 increase 8 evaporation 9 diffusion 10 plasma

Naveen Dhull 3 years, 8 months ago

Please give the answer
  • 1 answers

Abhi Nav 3 years, 8 months ago

No
  • 1 answers

Sanskriti Shah 3 years, 7 months ago

अर्थात जब मन में अहंकार रूपी अँधेरा था तब ईश्वर रूपी प्रकाश न था , मन में ईश्वर्य प्रेम का दीपक जलाने से अहंकार रूपी तम छठ गया।
  • 1 answers

Priyanka Giri 3 years, 8 months ago

The measure of each exterior angle of the regular polygons is 360 degree.
  • 1 answers

Pratiksha Sweety 3 years, 8 months ago

First we divide 5/7 = 0.714285714 Then we divide 9/11= 0.81 We can write any three irretional number between 0.714285714 & 0.81 For example Iam writting 0.720720072000720000.... 0.80800800080000800000.. 0.7607600760007600007600000....
  • 1 answers

Rouf King 3 years, 8 months ago

What does Mrs.Bennet tell her husband
  • 3 answers

Pramod90000 Sharma 3 years, 8 months ago

The light is travelling in any one direction in a straight line

Vamsi Koyya 3 years, 8 months ago

Iit is beam of light tavels one point to another

Vaidik Singh 3 years, 8 months ago

A light ray is a line that is perpendicular to the light's wavefronts; its tangent is collinear with the wave vector
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  • 1 answers

Disha Sharma 3 years, 8 months ago

77688
  • 5 answers

Raunak Sharma 3 years, 8 months ago

By putting the value of x, we get p(1)= 5(1)^3-2(1)^2+3(1)-2 =5×1-2×1+3×1-2 =5-2+3-2 =3+1 =4 is the answer

Anurag Sonkar 3 years, 8 months ago

P(x)=5x^3-2x^2 +3x-2 When the value of x=1 Then the answer is Put the value 2 on the place of x Then , we get 5×1^3-2×1^2+3×1-2 We know that , When 1 is multiply by any time of mo 1 we get 1 So,5×1-2×1+3×1-2 =5-2+3-2 We apply the BODMAS formula in that value =5+1-2 =6-2 =4 Answer is 4

Samriddhi Yadav 3 years, 8 months ago

5-2+3-2 8-4 4 p(1)=4

Avni Karhana 3 years, 8 months ago

P(1)=8

Kritika Mittal 3 years, 8 months ago

P(1)=4
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  • 5 answers

Saksham Shah 3 years ago

क्

Batskhem Youthborn 3 years, 8 months ago

Oand1

Sunil Gupta 3 years, 8 months ago

What is computer

Jigar Singh 3 years, 8 months ago

Bnimom

Shirtama Yadav Pihu Yadav 3 years, 8 months ago

शब्दपरिचय
  • 0 answers
  • 2 answers

Pramod90000 Sharma 3 years, 8 months ago

In this process removal of wastage substance in our body is known as excretion

Vamsi Koyya 3 years, 8 months ago

Removal of waste substances in our body is called as excretion
  • 0 answers

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