experiment 9

Now, repeat the whole experiment with castor oil (half kg) in the same vessel. Let its initial temperature be Again heat it exactly for two minutes (so that same amount of heat is supplied to castor oil). Note its temperature as The experiment may be repeated with different liqu..

Take half kg of water in a vessel. Note its temperature Heat it for exactly 2 minutes using a Bunsen burner. Again note down its temperatur..

Carbon monoxide is prepared with the help of oxalic acid and concentrated sulphuric acid as shown in figure 11.2...

Copper taken = 1.179g Copper oxide formed = 1.476g Oxygen present = 1.476 - 1.179 = 0.297g Percentage of oxygen is same in both the above cases so the law of constant composition is illustrate..

Prepare and collect a jar of carbon dioxide. Ignite a ribbon of magnesium, and introduce it in the jar of carbon dioxide. The magnesium ribbon continues to burn in carbon dioxide. Deposits of carbon can be seen on the inner sides of the jar (Fig.11.10)...

This solution removes the vapours of hydrogen chloride from the carbon dioxide gas. The gas is now passed through concentrated sulphuric acid to remove water vapour. It is then collected over mercury. Remember : Dilute sulphuric acid should not be used in this preparation as it forms a white insolu..

In experiments on pea breeding, Mendel obtained the following frequencies of seeds: 315 round and yellow, 101 wrinkled and yellow, 108 round and green, 32 wrinkled and green. Theory predicts that the frequencies should be in the ratio 9 : 3 : 3 : 1. At α = 0.01, find chi-s..

When the card is flicked with the finger the coin placed over it falls in the glass But the horizontal distance travelled by a projectile depends upon its velocity in the horizontal direction. The horizontal distance travelled by a projectile depends upon its velocity in the horizontal direction Th..

Question: What would you observe if there are two massive bodies A and B of equal masses which experience only force of gravitation? Answer: The objects A and B would be moving around each other..

Question: Imagine you are the narrator now aged fifteen. Write a letter to your friend recounting your experiences through the Kruger Park. Answer: Nene S. Africa 6.7. 2000 Dear Sheela, You know, I want to tell you something very exciting. I have got my Board results. I ha..