First Half Book Test
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Chemistry 10th (Test 07) First Half Book
School/College/Academy Name Here | ||
| T. Time: 01:30 hrs. | Test No 07 ------ First Half | Class: 10th |
| T. Marks: 75 | Name: ----------------------------------------------------- | Paper: Chemistry |
- No. 01: - Choose the correct answer. (12 ├Ч 1 = 12)
| 1) For a reaction b/w PCl3 and Cl2 to from PCl5 the units of kc are; ┌й█Т █М┘И┘Ж┘╣╪│ █Б█М┌║╪Я kc ╪и┘Ж╪з┘Ж█Т ┌й█Т ┘Д█М█Т ╪▒█М ╪з█М┌й╪┤┘Ж ┘Е█М┌║ PCl5 ╪│█Т PCl3 ╪з┘И╪▒ Cl2 | ||||||
| a) mol dm-3 | b) mol-1 dm-3 | c) mol-1 dm-3 | d) mol dm3 | |||
| 2) for the reaction 2A + B 3C the expression for the equilibrium constant is; ┘Е┘Ж╪п╪▒╪м█Б ╪░█М┘Д ╪▒█М ╪з█М┌й╪┤┘Ж ┌й█Т ┘Д█М█Т ┌й┘И┘Ж╪│█М ╪з█М┌й┘И█М ┘Д█М╪и╪▒█М┘Е ┌й┘И┘Ж╪│┘╣█М┘Ж┘╣ ╪з█М┌й╪│┘╛╪▒█М╪┤┘Ж ╪п╪▒╪│╪к █Б█Т╪Я 2A + B 3C | ||||||
| a) | b) | c) | d) | |||
| 3) Reactions which proceed almost to completion have; ┌й█М ┘И█М┘Д█М┘И █Б█Т╪Я Kc╪з█М╪│█Т ╪▒█М ╪з█М┌й╪┤┘Ж ╪м┘И ╪к┌й┘Е█М┘Д ╪к┌й ┘╛█Б┘Ж┌Ж╪к█Т █Б█М┌║ ╪з┘Ж┌й█М | ||||||
| a) Small kc value | b) Large kc value | c) Both a and b | d) All of the above | |||
| 4) Acids react with metal sulphide to liberate; ╪з█М╪│┌И ┘Е█М┘╣┘Д ╪│┘Д┘Б╪з╪ж█М┌И ┌й█Т ╪│╪з╪к┌╛ ╪к╪╣╪з┘Е┘Д ┌й╪▒ ┌й█Т ╪о╪з╪▒╪м ┌й╪▒╪к█Т █Б█М┌║╪Я | ||||||
| a) H2 S | b) H2 O2 | c) Co2 | d) All of the above | |||
| 5) Dilute acids react with carbonates to produce given product except; ╪з█М╪│┌И ┌й╪з╪▒╪и┘И┘Ж█М┘╣ ┌й█Т ╪│╪з╪к┌╛ ╪▒█М ╪з█М┌й┘╣ ┌й╪▒ ┌й█Т ┘Е┘Ж╪п╪▒╪м█Б ╪░█М┘Д ┘Е█М┌║ ╪│█Т ┌й┘И┘Ж╪│╪з ┘╛╪▒╪з┌И┌й┘╣ ┘Ж█Б█М┌║ ╪и┘Ж╪з╪к█Т╪Я | ||||||
| a) Salt ┘Ж┘Е┌й | b) Water ┘╛╪з┘Ж█М | c) Carbon dioxide ┌й╪з╪▒╪и┘Ж ┌И╪з╪ж█М ╪в┌й╪│╪з╪ж█М┌И | d) Hydrogen █Б╪з╪ж█М┌И╪▒┘И╪м┘Ж | |||
| 6) Which one of the following is a Lewis base; ┘Е┘Ж╪п╪▒╪м█Б ╪░█М┘Д ┘Е█М┌║ ╪│█Т ┌й┘И┘Ж╪│█М ┘Д█М┘И╪│ ╪и█М╪│ █Б█Т╪Я | ||||||
| a) NH3 | b) BF3 | c) H+ | d) AlCl3 | |||
| 7) Which organic compound was prepared by Kolbe in laboratory; ┌й╪з┘Д╪и ┘Ж█Т ┘Д█М╪и╪з╪▒┘╣╪▒█М ┘Е█М┌║ ┌й┘И┘Ж╪│╪з ╪в╪▒┌п█М┘Ж┌й ┌й┘Е┘╛╪з╪ж┘И┘Ж┌И ╪к█М╪з╪▒ ┌й█М╪з╪Я | ||||||
| a) Urea █М┘И╪▒█М╪з | b) Acetic acid ╪з█М╪│┘╣┌й ╪з█М╪│┌И | c) Ammonium cyanate╪з┘Е┘И┘Ж█М┘Е ╪│╪з█М╪з┘Ж█М┘╣ | d) All of the above | |||
| 8) Which one of following compounds is an aldhyde; ┌й┘И┘Ж╪│╪з ┌й┘Е┘╛╪з╪ж┘И┘Ж┌И ╪з┘Д┌И█М █Б╪з╪ж█М┌И █Б█Т╪Я | ||||||
| a) CH3-CH2-OH | b) CH3-COOH | c) CH3CHO | d) CH3COCH3 | |||
| 9) Coal having 90% carbon contents is called; ┌й┘И┘Д ┌й█М ┘И█Б ┘В╪│┘Е ╪м╪│┘Е█М┌║ 90┘к ┌й╪з╪▒╪и┘Ж █Б┘И╪к█М █Б█Т╪Я | ||||||
| a) Peat ┘╛█М┘╣ | b) Lignite ┘Д█М┌п┘Ж╪з╪ж█М┘╣ | c) Anthracite ╪з█М┘Ж╪к┌╛╪▒╪з ╪│╪з╪ж█М┘╣ | d) Bituminous ╪и█М┘И┘╣┘И ┘Е█М┘Ж╪│ | |||
| 10) The simplest alkene is ethane having formula; ╪з█М╪к┌╛█М┘Ж ┌й╪з ┘Б╪з╪▒┘Е┘И┘Д╪з ┌й┘И┘Ж╪│╪з █Б█Т╪Я | ||||||
| a) C2H2 | b) C2H4 | c) C2H6 | d) C2H5 | |||
| 11) The general formula for alkynes is; ╪з┘Д┌й╪з╪ж█М┘Ж ┌й╪з ╪м┘Ж╪▒┘Д ┘Б╪з╪▒┘Е┘И┘Д╪з ┌й█М╪з █Б█Т╪Я | ||||||
| a) CnH2n | b) CnH2n-2 | c) CnH2n+2 | d) CnH2n+1 | |||
| 12) Which one of these is a saturated hydrocarbons; ┌й┘И┘Ж╪│╪з ╪│█М┌Ж┘И╪▒█М┘╣█М┌И █Б╪з╪ж█М┌И╪▒┘И ┌й╪з╪▒╪и┘Ж █Б█Т╪Я | ||||||
| a) C2H4 | b) C3H6 | c) C4H8 | d) C5H12 | |||
- No. 02: - Give short answer of the following. (32)
| ├Ш PART 01: Attempt Any 06 Questions Of The Following. (6 ├Ч 2 = 12) | ||||||||||
| i. What is meant by dynamic equilibrium state? | ╪п╪з╪ж█М┘Ж╪з┘Е┌й ╪з█М┌й┘И█М ┘Д█М╪и╪▒█М┘Е ╪│┘╣█М┘╣ ╪│█Т ┌й█М╪з ┘Е╪▒╪з╪п █Б█Т╪Я | |||||||||
| ii. Balance and complete the chemical equation H2+I2 | ┘Е┘Ж╪п╪▒╪м█Б ╪░█М┘Д ┘Е╪│╪з┘И╪з╪к ┌й┘И ┘Е┌й┘Е┘Д ╪з┘И╪▒ ┘Е╪к┘И╪з╪▓┘Ж ┌й╪▒█М┌║█Ф | |||||||||
| iii. Write two characteristics of bases. | ╪и█М╪│ ┌й█М ╪п┘И ╪о╪╡┘И╪╡█М╪з╪к ┘Д┌й┌╛█М┌║█Ф | |||||||||
| iv. What is conjugate acid? Give example. | ┌й╪з┘Ж╪м┘И┌п█М┘╣ ╪з█М╪│┌И ┌й█М╪з █Б█Т ╪з█М┌й ┘Е╪л╪з┘Д ╪и┌╛█М ╪п█М┌║█Ф | |||||||||
| v. Describe two uses of hydrochloric acid. | █Б╪з╪ж█М┌И╪▒┘И┌й┘Д┘И╪▒┌й ╪з█М╪│┌И ┌й█Т ╪п┘И ╪з╪│╪к╪╣┘Е╪з┘Д╪з╪к ┘Д┌й┌╛█М┌║█Ф | |||||||||
| vi. How direction of a reaction can be predicted? | ╪▒█М ╪з█М┌й╪┤┘Ж ┌й█М ╪│┘Е╪к ┌й█М╪│█Т ┘Е╪╣┘Д┘И┘Е ┌й█М ╪м╪з╪к█М █Б█Т╪Я | |||||||||
| vii. What is the difference b/w forward and reverse reaction. | ┘Б╪з╪▒┘И╪▒┌И ╪з┘И╪▒ ╪▒█М┘И╪▒╪│ ╪▒█М ╪з█М┌й╪┤┘Ж ┘Е█М┌║ ┘Б╪▒┘В ┌й╪▒█М┌║█Ф | |||||||||
| viii. Why reversible reaction never complete. | ╪▒█М ┘И╪▒╪│█М╪и┘Д ╪▒█М ╪з█М┌й╪┤┘Ж ┌й█М┘И┌║ ┘Е┌й┘Е┘Д ┘Ж█Б█М┌║ █Б┘И╪к█Т╪Я | |||||||||
| ├Ш PART 02: Attempt Any 05 Questions Of The Following. (5 ├Ч 2 = 10) | ||||||||||
| i. Define PH. What is the PH of water? | ┘╛█М ╪з█М┌Ж ┌й█М ╪к╪╣╪▒█М┘Б ┌й╪▒█М┌║ ╪з┘И╪▒ ┘╛╪з┘Ж█М ┌й█М ┘╛█М ╪з█М┌Ж ┌й╪к┘Ж█М █Б┘И╪к█М █Б█Т╪Я | |||||||||
| ii. Why H+ ion acts as a Lewis acid? | █Б╪з╪ж█М┌И╪▒┘И╪м┘Ж ╪в╪ж┘Ж ┘Д█М┘И╪│ ╪з█М╪│┌И ┌й█Т ╪╖┘И╪▒ ┘╛╪▒ ┌й█М┘И┌║ ╪╣┘Е┘Д ┌й╪▒╪к╪з █Б█Т╪Я | |||||||||
| iii. Give few characteristics properties of salts. | ╪│╪з┘Д┘╣ ┌й█М ┌Ж┘Ж╪п ╪о╪╡┘И╪╡█М╪з╪к ┘Д┌й┌╛█М┌║█Ф | |||||||||
iv. Name the acid present in
| ┘Е┘Ж╪п╪▒╪м█Б ╪░█М┘Д ┘Е█М┌║ ┌й┘И┘Ж╪│╪з ╪к█М╪▓╪з╪и ┘╛╪з█М╪з ╪м╪з╪к╪з █Б█Т╪Я
| |||||||||
| v. How is coal formed? | ┌й┘И┘Д ┌й█М╪│█Т ╪и┘Ж╪з╪Я | |||||||||
| vi. Explain different radical of butane. | ╪и█М┘И┘╣█М┘Ж ┌й█Т ┘Е╪о╪к┘Д┘Б ╪▒█М┌И█М┌й┘Д ┘Д┌й┌╛█М┌║█Ф | |||||||||
| vii. Write classification of coal. | ┌й┘И┘Д ┌й█М ┌й┘Д╪з╪│█М┘Б┌й█М╪┤┘Ж ┘Д┌й┌╛█М┌║█Ф | |||||||||
| viii. Define functional group with example. | ┘Б┘Ж┌й╪┤┘Ж┘Д ┌п╪▒┘И┘╛ ┌й█М ╪к╪╣╪▒█М┘Б ┌й╪▒█М┌║ ╪з┘И╪▒ ┘Е╪л╪з┘Д ╪и┌╛█М ╪п█М┌║█Ф | |||||||||
| ├Ш PART 03: Attempt Any 05 Questions Of The Following. (5 ├Ч 2 = 10) | |
| i. Differentiate b/w saturated and unsaturated hydrocarbons. | ╪│█М┌Ж┘И╪▒█М┘╣┌И ╪з┘И╪▒ ╪з┘Ж ╪│█М┌Ж┘И ╪▒█М┘╣┌И █Б╪з╪ж█М┌И╪▒┘И ┌й╪з╪▒╪и┘Ж╪▓ ┘Е█М┌║ ┘Б╪▒┘В ┌й╪▒█М┌║█Ф |
| ii. Give physical properties of alkanes. | ╪з┘Д┌й█М┘Ж ┌й█М ╪╖╪и╪╣█М ╪о╪╡┘И╪╡█М╪з╪к ┘Д┌й┌╛█М┌║█Ф |
| iii. Why alkanes are called paraffinтАЩs? | ╪з┘Д┌й█М┘Ж╪▓ ┌й┘И ┘╛█М╪▒╪з ┘Б┘Ж╪▓ ┌й█М┘И┌║ ┌й█Б╪к█Т █Б█М┌║╪Я |
| iv. Justify that alkanes give substitution reaction. | ╪з┘Д┌й█М┘Ж ╪╡╪▒┘Б ╪к╪и╪з╪п┘Д█Т ┌й█Т ╪▒█М ╪з█М┌й╪┤┘Ж╪▓ ╪п█М╪к█Т █Б█М┌║ ┘И╪╢╪з╪н╪к ┌й╪▒█М┌║█Ф |
| v. Give characteristics of reversible reaction. | ╪▒█М ┘И╪▒╪│█М╪и┘Д ╪▒█М ╪з█М┌й╪┤┘Ж ┌й█М ╪о╪╡┘И╪╡█М╪з╪к ┘Д┌й┌╛█М┌║█Ф |
| vi. What are complex salt? Give example. | ┌й┘Е┘╛┘Д█М┌й╪│ ╪│╪з┘Д┘╣ ┌й█М╪з █Б┘И╪к█Т █Б█М┌║╪Я ┘Е╪л╪з┘Д ╪п█М┌║ |
| vii. Differentiate b/w homocyclic and hetrocyclic comp. | █Б┘И┘Е┘И ╪│╪з╪ж█М┌й┘Д┌й ╪з┘И╪▒ █Б█М┘╣╪▒┘И ╪│╪з╪ж█М┌й┘Д┌й ┌й┘Е┘╛╪з╪ж┘И┘Ж┌И ┘Е█М┌║ ┘Б╪▒┘В ┌й╪▒█М┌║█Ф |
| viii. Give some uses of PH. | ┘╛█М ╪з█М┌Ж ┌й█Т ╪з╪│╪к╪╣┘Е╪з┘Д╪з╪к ┘Д┌й┌╛█М┌║█Ф |
- No. 03: - Attempt (any 02) of the following. (7 ├Ч 3 = 21)
| a) Explain predicting extent of a reaction. (04) b) Explain chemical reaction of acids. (03) | ╪н╪п ┌й█М ┘╛█М╪┤┌п┘И╪ж█М ┌й█М╪│█Т ┌й█М ╪м╪з╪к█М █Б█Т ┘И╪╢╪з╪н╪к ┌й╪▒█М┌║█Ф ╪▒█М ╪з█М┌й╪┤┘Ж ┌й█М (a ╪з█М╪│┌И ┌й█Т ┌й█М┘Е█М╪з╪ж█М ╪▒█М ╪з█М┌й╪┤┘Ж ┘Д┌й┌╛█М┌║█Ф(b |
| a) What is functional group explain. (04) b) Explain following reactions of alkanes. i) Halogenations ii) Combustion (03) | ┘Б┘Ж┌й╪┤┘Ж┘Д ┌п╪▒┘И┘╛ ╪│█Т ┌й█М╪з ┘Е╪▒╪з╪п █Б█Т╪Я ┘И╪╢╪з╪н╪к ┌й╪▒█М┌║█Ф(a ╪з┘Д┌й█М┘Ж╪▓ ┌й█Т ┘Е┘Ж╪п╪▒╪м█Б ╪░█М┘Д ╪▒█М ╪з█М┌й╪┤┘Ж╪▓ ┘╛╪▒ ┘Ж┘И┘╣ ┘Д┌й┌╛█М┌║█Ф (█Б█М┘Д┘И ╪м█М┘Ж█М╪┤┘Ж) (╪м┘Д┘Ж█Т ┌й╪з ╪╣┘Е┘Д)(b |
| a) Write down preparative method and chemical reactions of alkayne. (04) b) Explain with reactions different types of salts. (03) | ╪з┘Д┌й╪з╪ж█М┘Ж╪▓ ┌й█Т ╪к█М╪з╪▒█М ┌й█Т ╪╖╪▒█М┘В█Т ╪з┘И╪▒ ┌й█М┘Е█М┌й┘Д ╪▒█М ╪з█М┌й╪┤┘Ж ┘Д┌й┌╛█М┌║█Ф(a ╪│╪з┘Д┘╣ ┌й█М ┘Е╪о╪к┘Д┘Б ╪з┘В╪│╪з┘Е ┘Д┌й┌╛█М┌║█Ф(b |
| a) Define and explain law of mass action. (04) b) Give uses of different salts. (03) | ┘Д╪з ╪в┘Б ┘Е╪з╪│ ╪з█М┌й╪┤┘Ж ┌й█М ╪к╪╣╪▒█М┘Б ╪з┘И╪▒ ┘И╪╢╪з╪н╪к ┌й╪▒█М┌║█Ф(a ┘Е╪о╪к┘Д┘Б ╪│╪з┘Д┘╣╪│ ┌й█Т ╪з╪│╪к╪╣┘Е╪з┘Д╪з╪к ┘Д┌й┌╛█М┌║█Ф(b |
| a) Write general characteristics of organic compound. (04) b) Obtained by destructive distillation of coal. (03) | ╪в╪▒┌п█М┘Ж┌й ┌й┘Е┘╛╪з┘И┘Ж┌И ┌й█М ╪о╪╡┘И╪╡█М╪з╪к ┘Д┌й┌╛█М┌║ █Ф(a ┌й┘И┘Д ╪│█Т ┌й█М╪з ┘Е╪▒╪з╪п █Б█Т╪Я ┌й┘И┘Д ┌й█М ┌И╪│┘╣╪▒┌й┘╣█М┘И ┌И╪│┘╣█М┘Д╪з█М╪┤┘Ж ╪│█Т ╪н╪з╪╡┘Д █Б┘И┘Ж█Т ┘И╪з┘Д█М ┌й┘Е┘╛╪з┘И┘Ж┌И ╪▓ ┌й█М ┘И╪╢╪з╪н╪к ┌й╪▒█М┌║█Ф(b |
- No. 04: - Practical portion. (Attempt any 02) (10)
| a) Give method to standardize the hydrochloric acid. (03) b) NaoH and KoH are not called primary standard. Why? (02) | ╪п█М╪ж█Т ┌п╪ж█Т █Б╪з╪ж█М┌И╪▒┘И┌й┘Д┘И╪▒┌й ╪з█М╪│┌И ┌й┘И ╪│┘╣█М┘Ж┌И╪▒╪з╪ж█М╪▓┌И ┌й╪▒┘Ж█Т ┌й╪з ╪╖╪▒█М┘В█Б ┘Д┌й┌╛█М┌║█Ф(a ┌й┘И ┘╛╪▒╪з╪ж█М┘Е╪▒█М ╪│┘╣█М┘Ж┌И╪▒┌И ┌й█М┘И┌║ ┘Ж█Б█М┌║ ┌й█М╪з ╪м╪з╪к╪з╪Я KoH ╪з┘И╪▒ NaoH (b |
| a) How will you test Na, Ca, Sr, Ba, Cu, K, ions by flame test? (03) b) Calculate the mass of NaoH to prepare solution of NaoH having 0.1m strength and volume 1dm3. (02) | ┘Б┘Д█М┘Е ┘╣█М╪│┘╣ ┌й█Т ╪░╪▒█М╪╣█Т ╪│┘И┌И█М┘Е╪М┌й█М┘Д╪┤█М┘Е╪М┘╣╪▒╪з╪┤█М┘Е╪М╪и█М╪▒█М┘Е╪М┌й┘И┘╛╪▒╪М┘╛┘И┘╣╪з╪┤█М┘Е╪М╪в╪ж┘Ж╪▓ ┌й█М ╪┤┘Ж╪з╪о╪к ┌й╪▒█М┌║█Ф(a ┌й╪з ┘Е╪з╪│ ┌й█М╪з █Б┘И┌п╪з█Ф NaoH ╪│┘Д┘И╪┤┘Ж ┘Е█М┌║ ┘Е┘И╪м┘И╪п 1dm3 ╪│┘И┌И█М┘Е █Б╪з╪ж█М┌И╪▒┘И ╪в┌й╪│╪з╪ж█М┌И ┌й█Т 0.1m(b |
| a) How will you prove that some chemicals present in our surroundings are weak acids? (03) b) Differentiate b/w strong acid weak acid. (02) | ┌Ж┘Ж╪п ┘В╪п╪▒╪к█М ╪╖┘И╪▒ ┘╛╪▒ ┘╛╪з╪ж█Т ╪м╪з┘Ж█Т ┘И╪з┘Д█Т ┘И╪з┘Д█М ╪з╪┤█М╪з ┌й█Т ╪и╪з╪▒█Т ┘Е█М┌║ ╪л╪з╪и╪к ┌й╪▒█М┌║ ┌й█Б ┘И█Б ╪з█М┌й ┘И█М┌й ╪з█М╪│┌И █Б█М┌║█Ф(a ╪│┘╣╪▒┘И┘Ж┌п ╪з█М╪│┌И ╪з┘И╪▒ ┘И█М┌й ╪з█М╪│┌И ┘Е█М┌║ ┌й█М╪з ┘Б╪▒┘В █Б█Т╪Я(b |
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