Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.gif)
Good news for the students who are near to give their board exams of matric class because here is another exciting and most dedicated service offered by this website ilmkidunya.com for all the matric students and this is to provides them a standardize and maintain level of preparation for matric students of each particular subject according to the syllabus mentioned in BISE.
Chemistry, when a student firstly listens to this subject name they definitely come in stress because the chemistry subject is as difficult as its name indicate it.
When a student starts its preparation for exams he/she feel uneasy to learn some subjects chemistry is also one of them because of containing many numerical, balance chemical equations, chemical reactions, and its end products and many other things. Making easy the understanding of this difficult subject “ilmkidunya.com” announced a special online test session for the 10th class students. This type of preparation methodology emphasize every topic of the relevant subject and helps the students to remind and revise it on daily basis. The website starting this session again for the ease of their students. This website portal manages their student's exams preparation in a most comfortable form by giving each subject preparations details both in Urdu and English medium and then dividing every subject equally and each subject is furthermore subdivided into units according to the given chapters of the subjects. The 10th class chemistry subject also designed on the same pattern as mentioned above including the short questions and its answers too. Here a student easily remember the key points of every subject easily and it will help the students not only in the exams but also later on his/her educational career as well.
This website gives student a brilliant chance to get prepare for their board exams through this online preparation method and definitely it helps in time management process during the exams periods, in short this website provides their matric students a genuine online preparation method for board exams it will help the students in all means.
10th Class Chemistry Preparation
10th Class English Medium Subjects
10th Class Urdu Medium Subjects
Online Short Questions For Chapter 6 "10th Class Chemistry English Medium Chapter 14 Preparation "
Try The Short Questions For 10th Class Chemistry English Medium Chapter 14 Preparation
-
Total Questions10
-
Available Sets9
Chemistry - 10th Class Chemistry English Medium Chapter 14 Preparation
Question # 1
Explain why non ionic polar compounds are soluble in water ?
- Ans 1: Water molecule is composed of of hydrogen and oxygen atom. Because of two O-H bonds and two lone pairs , one H2O molecule can form hydrogen bonding with four other H2O molecules . This unique behaviour of water enables it to dissolve many polar non-ionic compounds having hydroxyl group (-OH) like alcohols , organic acids , glucose , sugar etc by forming hydrogen bonds with them
Prepare Complete Set Wise Questions For Chapter 6 "10th Class Chemistry English Medium Chapter 14 Preparation "
10th Class Chemistry English Medium Chapter 14 Preparation - Set 1
Question # 1
Explain why non ionic polar compounds are soluble in water ?
- Ans 1: Water molecule is composed of of hydrogen and oxygen atom. Because of two O-H bonds and two lone pairs , one H2O molecule can form hydrogen bonding with four other H2O molecules . This unique behaviour of water enables it to dissolve many polar non-ionic compounds having hydroxyl group (-OH) like alcohols , organic acids , glucose , sugar etc by forming hydrogen bonds with them
10th Class Chemistry English Medium Chapter 14 Preparation - Set 2
Question # 1
Explain the chemistry of removing the temporary hardness by boiling water .
-
Ans 1: Temporary harness of water is easily removed by boiling water . On boiling , calcium bicarbonate Ca(HCO)3decomposes to produce insoluble calcium carbonate , which precipitates of the solution
- Ans 2: Ca(HCO3)2(aq)→ CaCO3 + H2O + CO2(g)
10th Class Chemistry English Medium Chapter 14 Preparation - Set 3
Question # 1
How water used as a cleansing agent in industries causes pollution .
- Ans 1: Water used as cleaning agent in industries is directly discharged out . This water contains all kinds of toxic chemicals and detergents
10th Class Chemistry English Medium Chapter 14 Preparation - Set 4
Question # 1
What do you mean by boiler scales ? How are they removed ?
- Ans 1: Hard water is unfit for use in stem engines ,boilers and turbines because insoluble calcium and magnesium salts deposit inside . They are called scales They are bad conductors of heat and hence more fuel is used . Insoluble calcium and magnesium sulphates not only reduce the efficiency of the engine but also cause the boiler to burst . They can be removed by using HCL
10th Class Chemistry English Medium Chapter 14 Preparation - Set 5
Question # 1
How flood risks are increasing?
- Ans 1: Global warming melts glaciers and snow caps that are increasing flood risks and intense tropical cyclones.
10th Class Chemistry English Medium Chapter 14 Preparation - Set 6
Question # 1
CO2 is responsible for heating up atmosphere, how?
- Ans 1: Because CO2 in the atmosphere acts like a glass wall of a green house. It allows UV radiations to pass through it but does not allow the IR radiations to pass through it. It traps some of the infrared radiations emitted by the Earth. Hence, increased concentration of CO2 layer absorbs the infrared radiations emitted by the Earth's surface that prevents heat energy escaping from the atmosphere. It helps to stop surface from cooling down during night. As the concentration of CO2 in air increases, less heat energy is lost from the surface of the Earth. Therefore, the average temperature of the surface gradually increases. This is called greenhouse effect
10th Class Chemistry English Medium Chapter 14 Preparation - Set 7
Question # 1
Why the 75% of the atmospheric mass lies within the troposphere ?
- Ans 1: The major constituent of troposphere are nitrogen and oxygen gases . These two gases volume by volume of Earth's atmosphere Hence it contain 75% of atmosphere mass
10th Class Chemistry English Medium Chapter 14 Preparation - Set 8
Question # 1
How temperature of atmosphere is maintained.
- Ans 1: Although concentration of carbon dioxide and water vapours is negligible in atmosphere, play a significant role in maintaining temperature of atmosphere. Both of these gases allows visible light to pass through but absorbs infrared radiations emitted by earth's surface. Therefore, these much of outgoing radiations and warm the atmosphere.
10th Class Chemistry English Medium Chapter 14 Preparation - Set 9
Question # 1
Comment burning in open air is preferred.
- Ans 1: Because in closed area. CO is produced instead of CO2CO causes suffocation and ultimately death.
10th class Chemistry Chapter 14 Preparation
Here you can prepare 10th chemistry chapter 14 online Short Questions Preparation Unit 14 (Atmosphare). Click the button for 100% free full practice test.
Share your comments & questions here
No comments yet. Be the first to comment!