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Subject: Science, asked on 22/11/17

Please answer .​

Subject: Science, asked on 7/11/17

Ans 15.11.19 and17

Subject: Science, asked on 15/10/17

What will happen to Ice if kept in vacuum

Subject: Science, asked on 9/10/17

Q.17.Which of these will cause a chemical change to occur?
(1) Grinding of wheat into flour
(2) Lightning of a gas stove
(3) Evaporation of water from a lake
(4) Ringing of an electric bell

Subject: Science, asked on 21/9/17

balance thefollowing equaton: Fe+HCl = FeCl 2 + H2
 

Subject: Science, asked on 20/9/17

how does iron rust?

Subject: Science, asked on 19/9/17

list some processes in which  chemical and physical changes both take place.

Subject: Science, asked on 19/9/17

what is chemical and physical reaction?
 

Subject: Science, asked on 19/9/17

what do u mean by physical properties?

Subject: Science, asked on 13/9/17

beating of egg to make a cake is a physical change or chemical change

Subject: Science, asked on 11/9/17

Write the precautions to be followed when a metre scale is being used for measuring a given length

Subject: Science, asked on 10/9/17

can you answer this question
Q.5. Kanav took two test tubes marked as I and II. In test tube I, he put calcium carbonate and hydrochloric acid while in test tube II, he put zinc granules and hydrochloric acid. He passed the gas coming out from both the test tubes in lime water. What would be his observation?

Subject: Science, asked on 10/9/17

rust is not iron. give reason why?

Subject: Science, asked on 10/9/17

What is the formula of sodium acetate?

Subject: Science, asked on 5/9/17

Write advantage of alcohol thermometer over a mercury thermometer.

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