www.scert.kerala.gov.in : Class X / SSLC / 10th Std / Tenth Standard Chemistry Sample Question Paper, State Council Educational Research and Training

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Document Described : Chemistry Question Paper, Kerala Question Paper

Sample Question Paper - 01
Chemistry
Std X

Chemistry
Std X Score : 50
Time : 1½ hours
1. The pressure and volume of a gas is P1 and V1 respectively. When pressure becomes P2 if volume is V2
a) State the condition for P1V1 = K ? ½
b) Choose the correct equation to calculate V2 ?
5. The chemical reaction in which an organic compound involved is represented as follows.
3 3 CH CH CH CH HBr - = - + ?.........................................
based on this answer the following questions
a) State whether the organic compound is an alkene or not ? (½)
b) Write the structural formula of the product obtained from the reaction ? (2)
c) Identify the type of reaction ? Explain ? (1½)

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http://www.scert.kerala.gov.in/quest..._Chemistry.pdf

6. The PH values of certain familiar substances are given below.
Substance pH value
Blood 7.4
Milk 6.8
Water 7
Saliva 6.4
Analyse the data in the table and answer the following questions
a) Which of the substances are acidic in nature ? (1)
b) Which substance is basic in nature ? (1)
7. The electronic configuration of three elements and some hints are given below. Examine them and answer the following questions.
A - 1S2, 2S2, 2P6, 3S2, 3P5
B - 1S2, 2S2, 2P6, 3S2, 3P6, 4S1
C - 1S2, 2S2, 2P6, 3S2, 3P6 4S2, 3d3
(The symbols given are not real)
Hints : -
The element which forms coloured compounds.
Show variable oxiodation states.
15. A farmer purchased a new farm. He discussed with an agriculture officer and other farmers about the scientific use of fertilizers so as to make cultivation profitable and retain the fertility of the land.
The details thus collected are listed below.
Due to the uses of fertilizers
assures the availability of food materials / crops
helps to retain the attitude towards cultivation
makes cultivation profitable
to attain higher yield from lesser area
to vitalize the growth of plants
continuous use of fertilizers decreases the fertility of the soil
leads to destruction of micro organisms beneficial to plants
reduces the natural immunity of plants
increases the attack of pests and insects
Analyzing the data provided what are the instructions that you can give the farmer regarding the advantages
and disadvantages of using fertilizers or not using fertilizers. (4)

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You can download the Std X Sample Question Paper for Chemistry from the above given PDF file.

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