CLASS-6 SUBJECT MATHS (FINALS.E) CHAPTER-12 (EXERCISE12.2) RATIOS AND PROPORTIONS

 EVENTS CONVENT HIGH SCHOOL

25/01/2022      CLASS- 6   SESSION 2021-22
SUBJECT :MATHS

CHAPTER-12

RATIOS AND PROPORTION'S

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Exercise 12.2

Question 1.Determine if the following are in proportion,
(a) 15, 45, 40, 120
(b) 33, 121, 9, 96
(c) 24, 28, 36, 48
(d) 32, 48, 70, 210
(e) 4, 6, 8, 12
(f) 33, 44, 75, 100
Solution:

∴ 15 : 45 :: 40 : 120
∴ 15, 45, 40 and 120 are in proportion.

∴ 33, 121, 9 and 96 are in proportion.

∴ 24, 28, 36 and 48 are not in proportion.

Question 2 Determine if the following ratios form a proportion. Also, write the middle terms and extreme terms where the ratios form a proportion.
(a) 25 cm : 1 m and ₹ 40 : ₹ 160
(b) 39 litres : 65 litres and 6 bottles : 10 bottles
(c) 2 kg : 80 kg and 25 g : 625 g

Solution:
(a) 25 cm : 1 m = 25 cm : 100 cm [∵ 1 m = 100 cm]

∴ The given ratios are in proportion.
Extreme terms are 25 cm and ₹ 160.
Middle terms are 1 m and ₹40.

∴ The given ratios are in proportion.
Extreme terms are 39 litres and 10 bottles.
Middle terms are 65 litres and 6 bottles.

∴ The given ratios are not in proportion.

Question 3. Are the following statements true?
(a) 40 persons : 200 persons = ₹15 : ₹75
(b) 7.5 litres : 15 litres = 5 kg : 10 kg
(c) 99 kg : 45 kg = ₹ 44 : ₹ 20

Solution:
(a) 40 persons : 200 persons

∴ Statement (a) is true.

(b) 7.5 litres : 15 litres

∴ Statement (b) is true.

∴ Statement (c) is true.

CLASS-6 SUBJECT SCIENCE (FINALS.E) CHAPTER-5 SEPRATION OF SUBSTANCES

  EVENTS CONVENT HIGH SCHOOL

25/01/2022      CLASS- 6   SESSION 2021-22
SUBJECT :SCIENCE

CHAPTER-5

SEPRATION OF SUBSTANCES

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1. Fill in the blanks:
(a) The method of separating seeds of paddy from its stalks is called .
(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of ______. 
(a) Salt is obtained from sea water by the process of ____________ .
(b) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ____________.
Ans.
(a) threshing
(b)filtration
(b) evaporation
(d) sedimentation and decantation

2. True or false?
(a) A mixture of milk and water can be separated by filtration.
(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.
(c) Separation of sugar from tea can be done with filtration.
(d) Grain and husk can be separated with the process of decantation.
Ans.
(a) False
(b) False
(c) False
(d) False

VERY SHORT ANSWER TYPE QUESTIONS

1. What is strainer?
Ans. Strainer is a kind of sieve which is used to separate a liquid from solid.

2. Name the method used to separate cream from curd.
Ans. Centrifugation.

3. How will you separate mango from a mixture of mango and apple?
Ans. By picking.

4. You are given a mixture of salt and sand. Can you separate them by picking?
Ans. No, we cannot separate them by picking.

5. Name the method used to separate the pieces of stone from grain.
Ans. Handpicking.

SHORT ANSWER TYPE QUESTIONS

l. What is mixture?
Ans. When two or more than two substances are mixed together in any ratio then it is called a mixture.

2. Write various methods of separation of components from their mixture.
Ans.

1. Handpicking
2. Threshing
3. Winnowing
4. Sedimentation
5. Decantation
6. Filtration
7. Evaporation
8. Condensation

3. Define the term handpicking.
Ans. The process used to separate slightly larger particles from a mixture by hand is called handpicking. For example: Stone pieces can be separated from wheat or rice by handpicking.

4. What do you mean by threshing? Where is it used?
Ans. Threshing is a process in which we separate grain from stalks. This process is used by farmer to separate gram, wheat, rice, mustard seeds in his field.

5. Write three methods of separation.
Ans. Handpicking, threshing and winnowing.

6. How will you separate oil and water from their mixture?
Ans. Oil, being lighter than water, will float on it. Two distinct layers are formed and slowly oil is allowed to flow into another container and is separated from water. Separating funnel can also be used to separate the two.

CLASS-7 SUBJECT CIVIC CHAPTER-3 HOW THE STATE GOVERMENT WORKS.

 EVENTS CONVENT HIGH SCHOOL

14/01/2022      CLASS- 7   SESSION 2021-22
SUBJECT :CIVIC 

CHAPTER-3

HOW THE STATE GOVERMENT WORKS

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VERY SHORT ANSWER TYPE QUESTIONS

1. How is the Governor of a state-appointed?  
Answer: The Governor of a state is appointed by the Central Government.

2. Whose responsibility is it to nm various government departments or ministers?
Answer: It is the responsibility of the Chief Minister and other ministers to run various government departments or ministers.

3. How will you define a Legislative Assembly?
Answer: A Legislative Assembly is a place where all the MLAs, from the ruling party as well as the opposition, meet to discuss various things.

4. Define the term ‘government’. 
Answer: The term ‘government’ refers to the government departments and various ministers who head them.

5. Who is the head of the executive?
Answer: The Chief Minister is the head of the executive.

6. Why did the Chief Minister and the minister for health visit Patalpwam district?
Answer: They went to visit the families who had lost their relatives due to the spread of diarrhea. They also visited people in hospitals.

7. Why are press conferences organised?
Answer: Press conferences are oragnised to discuss various current issues.

8. What do you know about wallpaper?
Answer: A wallpaper is an interesting activity through which research can be done on particular topics of interest.

9. Why do people in a democratic set up organise meetings? 
Answer: They do so to voice their opinions and protest against the government if any of its actions is not in their favour.

10. The government works at three levels. Name them.
Answer: The government works at three levels namely

• Local
• State
• Natural

SHORT ANSWER TYPE QUESTIONS

1.Use the terms ‘constituency’ and ‘represent’ to explain who an MLA is and how is the person elected?
Answer:

1. An MLA (Member of the Legislative Assembly) is the person affiliated to a political party or independent who represents a constituency {an area).
2. The person is elected in the following manner:
• A specific area is called a constituency.
• All the adults above 18 years of age are the voters.
• They vote for the candidate of their choice.
• The person who gets the maximum number of votes is declared elected.
• The elected representative is called an MLA.

2. Why should decisions are taken by the Chief Minister and other ministers be debated in the Legislative Assembly?
Answer:
The decisions taken by the Chief Minister and other ministers should be debated in the Legislative Assembly because of the following reasons:

1. The decisions, it is not necessary, taken by the Chief Ministers and ministers are beneficial to one and all.
2. All the MLAs should know about them.
3. Important suggestions may be incorporated in the final decisions.
4. Adversely affecting points are deleted after the debate.
5. The decisions so taken are the decisions of all the members and hence the people.