2nd Year Chemistry Chapter 5 (The Helogens and Noble Gasses) Online Preparation

Online Short Questions For Chapter 5 "12th Class Chemistry Chapter 5 Short Questions Preparation "

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Chemistry - 12th Class Chemistry Chapter 5 Short Questions Preparation

Question # 1

How bleaching powder is prepared by Hasenclever method?

  • Ans 1: The apparatus used in this method consists of 4 to 8 iron cylinders placed one above the other horizontal ,They are interconnected and provided with stirrers,The slaked lime is added in through a hopper in the upper cylinder and transported from one cylinder rises p and reacts with slacked lime form bleaching powder ,which is collected through the outlet in the lower cylinder.
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Prepare Complete Set Wise Questions For Chapter 5 "12th Class Chemistry Chapter 5 Short Questions Preparation "

12th Class Chemistry Chapter 5 Short Questions Preparation - Set 1

Question # 1

How bleaching powder is prepared by Hasenclever method?

  • Ans 1: The apparatus used in this method consists of 4 to 8 iron cylinders placed one above the other horizontal ,They are interconnected and provided with stirrers,The slaked lime is added in through a hopper in the upper cylinder and transported from one cylinder rises p and reacts with slacked lime form bleaching powder ,which is collected through the outlet in the lower cylinder.
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12th Class Chemistry Chapter 5 Short Questions Preparation - Set 2

Question # 1

Why HF is weaker acid that other halogen acid?

  • Ans 1: In water hydrogen halides give hydrofluoric ,hydrochloric ,hydrobromic and hydroiodic acid,The strength hydrogen halogen bond is very high in HF.The bond strength is reflected in the case of dissociation of hydrogen and halides,Hydrofluoric acid is week acid due to limited ionization,The other three acid are very strong acids,The acidic strength increase in order.
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12th Class Chemistry Chapter 5 Short Questions Preparation - Set 3

Question # 1

Perchloric acid is considered as valuable analytical reagent.Why?

  • Ans 1: Due to oxidizing effect of perchloric acid it is considered as valuable analytical reagent.
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12th Class Chemistry Chapter 5 Preparation

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