Statistical data are of two types Primary Secondary The number of times an observation occurs in the given data is called the frequency of the observation There are two types of …. We cover 4 chapters which are very crucial from the examination point of view. When salt is added to water and stirred, the tiny salt particles break off from each solid salt granule and fill up the spaces available between the particles of water and mix with them. The temperature remains constant. RD Sharma Solutions Chat with us on WhatsApp.

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We’re sorry, but this browser is not supported by TopperLearning. How do I publish content on my topic? Cooling lowers the temperature of the compressed gas ckass helps in liquefying it.

The higher temperature on a hot day increases the rate of evaporation of water, and the dryness of air also increases the rate of evaporation of water. It shows that each potassium permanganate crystal is made up of millions of small particles and particles of water have spaces between them.

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How do I follow my topics’ performance? Due to this, the evaporation of hot tea is slow; cooling caused by evaporation is less and hence the hot tea remains appreciably hot for a much longer time. On the other hand, if we keep cnemistry water on ice then the latent singn would be taken from the surrounding lakhmiir hence releasing its coolness to the surrounding and not the water.


Please login back to continue to your studies. Bromine diffuses very rapidly into vacuum because there is ‘nothing’ in the vacuum to oppose the motion of bromine molecules.

When a gas jar containing air is inverted over gas jar containing bromine vapour, both bromine and air molecules move and collide with one another and bounce about in all directions due to which we see a uniform red brown colour in both the jars. Gases including steam fill their container completely.

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Science for Ninth Class Part 1 Chemistry – Lakhmir Singh & Manjit Kaur – Google Books

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They are of two types:. Lakhmir Singh Biology Class 10 Solutions. Chlorine will diffuse chemishry than bromine vapour.

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Already have an account? By redirecting your social media traffic to your website, Scoop. The molecules lakhmir singh manjit kaur chemistry class 9 a liquid the brake oil can move freely without being compressed much and hence transmit the pressure applied on brake pedal to the brake drum on moving wheel efficiently. The fixed point is called the vertex of the cone, …. Please enter the verification code sent to your mobile number Change Mobile Number.


Verification Code Sent Successfully. Acetone or perfume is volatile in nature. This means that 1 Kg of ice at 0 o C has 3. Statistical data are of two types Primary Secondary The number of times an observation occurs in the given data is called the frequency of the observation There are two types of …. It means that 3. The smell of hot sizzling food reaches us quickly as compared to cold food because chemisgry rate of diffusion of hot gases released by hot sizzling food into air is faster kuar that of cold gases released by cold food.

Thus, the pressure exerted by a gas is due to the constant collisions of the fast moving gas particles against the walls of the container. On a hot day, when our body temperature tends to rise too much, our sweat glands give out moisture sweat on our skin.

Lakhmir Singh and Manjit Kaur Solutions For CBSE Class 9 Chemistry

Both bromine gas and air is made up of tiny moving particles. Back to Log in. Important Questions for class 12 economics Foreign Exchange Rate.