Saline hydrides are known to react with water violently producing fire. Can `CO_2` a well known fire extinguisher be used in this case? Explain.

Bt cotton is a well known example of application of Biotechnology in Agriculture. Bt cotton reduces the use of pesticides. Explain.

C Cl_(4) is a well known fire extinguisher. However, after using it to extinguish fire the room should be well ventilated . This is because

There are two compounds of sodium whose formulae are different by one H atom. Both the compounds can be prepared by the same process. One compound can be used for washing purpose and other can be used in fire extinguishes. Identify the compounds?

Bt. Cotton is a well known example of application of Biotechnology in Agriculture. Bt Cotton reduces use of pesticides. Explain.

There are two compounds of sodium whose formulae are different by one H atom. Both the compounds can be prepared by the same process. One compound can be used for washing purpose and other can be used in fire extinguishes. Name the method of preparation.

There are two compounds of sodium whose formulae are (anhydrous form) different by one H- atom. Both the compounds can be prepared by the same process. One compound can be used for washing purpose and other one can be used in fire extinguishes. (a) Identify the compounds? (b) Name the method of preparation?

Some statements related to cabon monoxide and carbon dioxide are given. Classify them accordingly. a) Formed as a result of incomplete combustion of carbon compounds. b) Aqueous solutions shows acidic nature. c) Poisonous gas d) Used in fire extinguishers. e) Can be used as fuel f) Formed as a result of complete combustion of carbon compounds. g) can be prepared from carbonates and bicarbonates. h) is a component of producer gas and water gas.

Iron metal is largely used for making ships. ln the sea, ship is in contact with saline water. Destruction of iron becomes quicker in saline medium. a)What is such processes generalty called? b). Destruction of iron can be prevented by coating with zinc, Explain the chemical reaction by-which iron gets protected. Give equations.

Assertion : The water gas shift reaction can be used to increase the amount of H_(2) in the 'syn gas' mixture. Reason : In this reaction, water is reduced to H_(2) by CO (I) If both assertion and reason are correct and reason is the correct explanation of assertion. (II) Both assertion and reason are correct but reason is not the correct explanation of assertion (III) If assertion is correct and reason is not correct (IV) Assertion is wrong and reason is correct