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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
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Total Questions10
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Available Sets9
Chemistry - 10th Class Chemistry English Medium Chapter 14 Preparation
Question # 1
Define atmosphere?
- Ans 1: Atmosphere is the envelope of different gases around the earth. It extends continuously from earth' surface outwards without any boundary. About 99% of atmospheric mass likes within 30 km and 75% lies within the lowest 11 km.
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
Define atmosphere?
- Ans 1: Atmosphere is the envelope of different gases around the earth. It extends continuously from earth' surface outwards without any boundary. About 99% of atmospheric mass likes within 30 km and 75% lies within the lowest 11 km.
10th Class Chemistry English Medium Chapter 14 Preparation - Set 2
Question # 1
How waterborne disease can be prevented ?
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Ans 1: Waterborne diseases can be prevented by taking the following measures1: Provision of safe water : Drinking water must be properly treated and purified2: Disposal of sewage : There must be adequate sanitary disposal of sewage . Any type of waste must not be thrown or discharge directly in water supplies or reservoirs3: Control of toxic chemicals : Chemical contamination can cause acute illness , but often toxic contaminants are slow poisons and carcinogens . There must be a strict control over the use of pesticides and other chemical
10th Class Chemistry English Medium Chapter 14 Preparation - Set 3
Question # 1
Where is the ozone layer found?
- Ans 1: Ozone is present throughout the atmosphere. But its maximum concentration called ozone layer lies in stratosphere region about 25 to 30 km away from the Earth's surface.
10th Class Chemistry English Medium Chapter 14 Preparation - Set 4
Question # 1
Why is ozone depleting in atmosphere?
- Ans 1: chlorofluorocarbons (CFCs ) (used as refrigerants in air conditioners and refrigerators) are major cause of depletion of ozone layer. These compounds leak in one way or other escape and diffuse to stratosphere. Ultraviolet radiations break the C-Cl bond in CFCI3 and generates chlorine free radicals
10th Class Chemistry English Medium Chapter 14 Preparation - Set 5
Question # 1
Where is the ozone layer found?
- Ans 1: Ozone is present throughout the atmosphere. But its maximum concentration called ozone layer lies in stratosphere region about 25 to 30 km away from the Earth's surface.
10th Class Chemistry English Medium Chapter 14 Preparation - Set 6
Question # 1
Why sea water is unfit for drinking and agricultural purposes ?
- Ans 1: Sea water is unfit for drinking and agricultural purposes due to high percentage of dissolved salts . Only 0.2 % of total water on the earth os portable i-e feet for drinking purpose
10th Class Chemistry English Medium Chapter 14 Preparation - Set 7
Question # 1
Differentiate primary pollutants and secondary pollutants.
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Ans 1: Secondary Pollutants :These are waste or exhaust product driven outvarious reactions of primary pollutantsexample : H2SO4, H2CO3 ,HNO3 , HF , Ozone ,PAN
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Ans 2: Primary Pollutants: These are wastes or exhaust product driven out because of combustion of fossil fuels and organic matterexample :Oxides of sulphur. oxides of carbon, oxides of nitrogen. CH,. ammonia and compounds of fluorine
10th Class Chemistry English Medium Chapter 14 Preparation - Set 8
Question # 1
Explain the phenomenon of decreasing temperature in troposphere
- Ans 1: Although, concentration of carbon dioxide and water vapours is negligible in atmosphere, yet they play a significant role in maintaining temperature of the atmosphere. Both of these gases allow visible light to pass through but absorb infrared radiations emitted by the Earth's surface. Therefore, these gases absorb much of the outgoing radiations and warm the atmosphere. As the concentration of gases decreases gradually with the increase of altitude. correspondingly temperature also decreases at a rate of 6C per kilometer.
10th Class Chemistry English Medium Chapter 14 Preparation - Set 9
Question # 1
Which forces are responsible for dissolving polar substances in water ?
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Ans 1: Water is the universal solvent because it can dissolve almost all the minerals . Its ability to dissolve substances is because of two unique properties of water1: Polarity of water molecule2: Exceptional hydrogen bonding ability
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.
