Trending ▼   ResFinder  

ICSE Class X Prelims 2020 : Chemistry (GEMS Modern Academy, Dubai) : Winter Mock Paper

5 pages, 85 questions, 46 questions with responses, 46 total responses,    2    0
Stuti Purohit
GEMS Modern Academy, Dubai
+Fave Message
 Home > stuti17 >   F Also featured on: School Page icse

Formatting page ...

MOCK EXAMINATION 2019 CHEMISTRY Grade: 10 Date: 30.12.2019 Time: 2 hrs. Max. marks: 80 __________________________________________________________________________ INSTRUCTIONS: The time stated above is the time allowed for writing the examination. In addition, the first 15 minutes will be the time given for reading the question paper. This paper is divided into Section A (40 marks) and Section B (40 marks). Answer all questions from Section A and any four questions from Section B. ____________________________________________________________________ SECTION A ( 40 MARKS ) Answer ALL Questions Question 1 (a) Name the following: (i) The gas used as a reducing agent in reducing copper oxide to copper. (ii) The functional group in ethanoic acid. (iii) The metal which burns in air with a golden yellow flame. (iv) The acid which produces sugar charcoal from sugar. (v) The gas produced when excess ammonia reacts with chlorine. (b) Choose the most appropriate answer for each of the following: (i)This is not an alloy of copper. (A)Brass (B)Bronze (C)Solder (D)Duralumin [5] [10] (ii)When fused lead bromide is electrolyzed, we observe (A)A silver grey deposit at the cathode and a reddish brown deposit at the anode (B) A silver grey deposit at the anode and a greyish brown deposit at the cathode (C) A silver grey deposit at the cathode and a reddish brown fumes at the anode (D) A silver grey deposit at the anode and a reddish brown fumes at the cathode (iii) Propane has (A) 7 covalent bonds (B) 9 covalent bonds (C) 8 covalent bonds (D) 10 covalent bonds (iv)Brown ring test is used for the detection of (A)Sulphate ion (B)Sulphide ion 1

Formatting page ...

Top Contributors
to this ResPaper
(answers/comments)


Saloni

(33)

Priti Agarwal

(9)

Ananya Ladha

(2)

Pr B

(1)

Formatting page ...

Formatting page ...

Formatting page ...

 

  Print intermediate debugging step

Show debugging info


 

 

© 2010 - 2020 ResPaper. Terms of ServiceContact Us Advertise with us

 

ICSE Q&A - Ask and Answer
stuti17 chat