Some argue that plastics are to be completely banned as they cause environmental pollution. What is your view?

What are the major causes of water pollution?

What measures, as an individual, would you take to reduce environmental pollution?

During a classroom discussion one of your friends argues that ionic product of water is not altered with change in temperature. What is your view towards this argument? Justify.

What do you mean by green chemistry? How will it help decrease environmental pollution?

A point object at a distance of 36 cm from the convex lens of focal length 10cm, is moved by 10cm in 2 sec along principle axis towards the lens. Then image will also change its position .A man argues that the image will move uniformly at the same speed as that of object. What is your opinion? Justify.

What are the major causes of water pollution? Explain.

Diborane is an important hydride of Boron. During a classroom discussion, a student argues that there is a covalent bond between Boron atoms in diborane. What is your opinion? Give justification.

Moon is the only satellite of earth. Mass of moon is very much lower than that of earth. A girl argues that even today if we visit moon, we can see the foot steps of Neil Armstrong. What is your opinion?

Diborane is an important hydride of Boron a. During a class room discussion, a student argues that there is a covalent bond between boron atoms in diborane. What is your opinion. Give justification. b. Boron halides can act as Lewis acids. Give reason. c. Arrange the following Lewis acids in the increasing order of acidic strength. Substantiate your answer? 'BF_3 BCl_3, BBr_3'