Chemistry Fsc Part 2 Chapter 4 Online Test With Answers

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Chemistry Fsc Part 2 Chapter 4 Online Test

Sr. # Questions Answers Choice
1 What are the number of the electrons in valence shell of P in PCl3 4 6 8 10
2 In aqua regia, the ratio of conc. HCl to Conc. HNO3 is 1 : 1 2 :1 1:2 3 : 1
3 Which allotrope of phosphorus has layers like graphite. white phosphorus Red phosphorus Black Phosphorus Amorphous phosphorus
4 Basicity of ortho phosphoric acid is. 1 2 3 4
5 PCl3 reacts with water to form PH3 POCl3 H3PO4 H3PO5
6 Each of the following is true for white and red phosphorus except one. Both are soluble in CCl4 Both can be oxidized by heating in air Both consists of same kind of atoms Both can be converted into each other
7 P2O5 is usually used as Drying agent only Reducing agent Both drying and reducing agent Both drying agent and oxidizing agent.
8 Which form of phosphorus is more stable. White Red Black Both a and b
9 Bone ash contain calcium phosphate 40% 50% 70% 80%
10 Which raw material is used for manufacture eof HNO3 by Birkland eyed process NH3 and CO2 Air Air and gypsum Lime stone and urea
11 Which of the following acids possess oxidizing and reducing properties. HCl HNO2 HNO3 H2SO4
12 When Cu reacts with conc. HNO3 , which one of the following gases is evolved N2O NO NO2 N2O5
13 NH4NO3 on heating at 200 oC changes to N2O NO NO2 N2O4
14 NO2 can be obtained by heating. NaNO3 KNO3 Pb(NO3)2 NH3NO3
15 Which one of the following oxide is brown in colour. NO NO2 N2O N2O3
16 Which element does not have allotropic form Nitrogen Phosphorous Arsenic Antimony
17 Lowest oxidation state of nitrogen is present in. NH3 NO2 NO HNO3
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