Question

Prepare the solution of barium chloride in water and take it in ignition tube. Prepare solution of

sodium sulphate in water and take it in conical flask.Hang the ignition tube in the flask carefully so

that the solution do not get mixed .Put the cork on the conical flask.Weigh the flask with the contents

carefully .Now tilt and shake the flask so that both the solution get mixed .Weigh the solution again.

(1X5=5)



on basis of above passage answer the following questions

4 what is the colour of barium chloride solution

a) blue

b) red

c) green

d)white

5 what change did you see after the two solutions were mixed in the conical flask

a) gas is evoved

b) solution disappeared

c) blue solution is formed

d) white solid formed in the flask

6 what happens to the mass of the flask and its contents

a) it increases

b) it decreases

c) first increases then decreases

d) no change in the mass

7 this activity proves

a) law of constant proportion

b) Dalton's law

c) ohm's law

d) law of conservation of mass

8 Define the law related to the activity​

Answer 1

Answer:

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HTML5 video tag

mp4 - MIME-type video/mp4.

webm - MIME-type video/webm.

ogg - MIME-type video/ogg.