CTET ANSWER KEY JULY 28' 2013- PAPER-2 -'P'

PART - I

CHILD DEVELOPMENT AND PEDAGOG



1)   1                        
2)   2
3)   3
4)   1
5)   3
6)   4
7)   2
8)   2
9)   1
10) 3
11)  2
12) 4
13) 4
14) 3
15) 3
16) 4
17) 1
18) 2
19) 4
20) 1
21) 2
22) 2
23) 4
24) 3
25) 4
26) 1
27)  2
28) 4
29) 2
30) 4

PART - II 

MATHEMATICS AND SCIENCE

31) 3
32) 3
33) 1
34) 3
35) 4
36) 1
37) 2
38) 1
39) 3
40)1
41) 1
42) 4
43) 4
44) 2
45) 4
46)1
47) 4
48) 4
49) 2
50) 3
51) 4
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53) 2
54) 2
55) 4
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57) 1
58) 2
59) 2
60) 1
61) 3
62) 4
63) 1
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65) 1
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67) 2
68) 1
69) 4
70) 4
71 )2
72) 3
73) 1
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75) 2
76) 4
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78) 4
79) 3
80) 2
81) 4
82) 1
83) 4
84) 3
85) 3
86) 2
87) 2
88) 2
89) 4
90) 2

PART- IV

LANGUAGE- I 

ENGLISH

91) 4
92) 2
93) 4
94) 4
95) 2
96) 3
97) 2
98) 3
99) 2
100) 2
101) 2
102) 3
103) 4
104) 2
105) 2
106) 2
107) 2
108) 1
109) 4
110) 2
111) 3
112) 1
113) 3
114) 1
115) 1
116) 3
117) 4
118) 3
119) 3
120) 2

NATURE'S BEAUTY- SUNSET

MATHS CLASS 9, NCERT CBSE, TERM-2,

CHAPTER-4: LINEAR EQUATIONS IN TWO VARIABLES

READ THE STATEMENTS GIVEN BELOW AND EXPRESS THEM IN EQUATION FORM:

(!) Ten years ago a man was 8 times as old as his son.

SOLUTION: Let x: man's age and y : son's age.

age of the man and his son ten years ago are : x-10 and y-10.

as the age of the man is 8 times that of his son: (x-10) = 8(y-10)

thus the equation will be : x-10 = 8(y-10)

                                      x-10 = 8y-80

                                      x-8y-10+80 = 0

                                      x-8y + 70 = 0

2) Harsha and Sukirta, 2 students of class IX, together contribute Rs. 1000 to orphanage fund to help orphan children.

SOLUTION:  Let x : Harsha's amount and y: Sukirta's amount, then 

the equation will be as:

                                   x + y = 1000

                                  x + y - 1000 = 0

3) The cost of a pen is 4 times the cost of a pencil.

SOLUTION: Let x : the cost of the pen, and y : the cost of the pencil. then

the equation will be ;

                                 x = 4y

                                 x - 4y = 0 

                                 x - 4y + 0 = 0

4) In a quadrilateral 2 angles are equal and one of them has a measure of 53 degree.

SOLUTION: Let x : the 2 equal angles, y : unknown angle,
a quadrilateral has 4 angles. by given two angles are equal so let we take the first 2 angles as x and x.
the third angle is 53 degrees. and the fourth angle is the unknown which is y.
we know that the sum of the four angles of a quadrilateral is 360 degree.
therefore, the equation will be;
                                              x + x+ 53 +y = 360
                                              2x + y + 53 - 360 = 0
                                              2x + y - 307 = 0

5) The cost of 2 sarees exceeds the cost of 3 suits by Rs. 5400.

SOLUTION: Let x : cost of the sarees, and y : cost of the suits
then the equation will be;
                                      2x = 3y + 5400
                                      2x - 3y - 5400 = 0

6)  Vishwa bought 150 chocolates for his birthday. he distributed the chocolates in his classroom by giving 3 chocolates to each boys and 2 chocolates for each girls, he is left with 10 chocolates.

SOLUTION: Let x : boys, and y : girls
then the equation will be;
                                       3x + 2y = 150 - 10
                                       3x + 2y = 140
                                       3x + 2y - 140 = 0

7) In a garden there are 5000 trees. out of this 5000 trees some are coconut trees and the others are mango trees.

SOLUTION: Let x : coconut trees, and y: mango trees.
then the equation will be;
                                       x + y = 5000
                                       x + y - 5000 = 0

8) The call-taxi fare in Chennai is as follows:
For the first kilometer, the fare is Rs. 50, and for the subsequent distance it is Rs. 20 per km.

SOLUTION: Let x : distance km , and y : fare Rs.
then the equation will be;
                                      y = 50 + 20(x-1)
                                      y = 50 + 20x - 20
                                      y = 30 + 20x
                                     20x - y + 30 = 0

9) The linear equation which converts temperature in degrees celsius (C) to degrees in Fahrenheit (F) is given by:
temperature in Fahrenheit is 32 more than 7/5 of the temperature in celsius.

SOLUTION: Let C: Celsius and F: Fahrenheit
F = 32 + 7/5 C

CLASS 9, NCERT SCIENCE, CHAPTER 2 IS MATTER AROUND US PURE

1 MARK QUESTIONS

1.  Name the technique to separate:

(a)   butter from curd.

(b)   salt from sea-water.

(c)   camphor from salt.

Ans. (a)  Centrifugation or churning

         (b)  Evaporation

         (c)  Sublimation

2.  What type of mixtures are separated by the technique of crystallisation?

Ans.  Homogeneous mixtures of a pure solid in the form of its crystals from solution are separated by the technique of crystallisation.

3.  How would you confirm that a colourless liquid given to you is pure water?

Ans.  By evaporating the colourless liquid on a low flame. If there is no residue left, then the colourless liquid is pure water.

4.  Which of the following will show "Tyndall effect"?

      (a)  Salt solution        (b)  Milk           (c)  Copper sulphate solution       (d)  Starch solution

Ans.  Milk and starch solutions will show Tyndall effect.

5.  How can you obtain coloured component  (dye) from Blue/Black ink?

Ans.  By evaporation method, we can separate dye (solid) from liquid (solvent) and by chromatography method, we can separate components of the dye.

6.  What happens when a saturated solution is heated?

Ans.  It becomes unsaturated.

7.  What happens when a hot saturated solution is cooled?

Ans.  Crystals will be formed.

8.  What is the effect of temperature on the solubility of solids in liquids?

Ans.  The solubility of liquids increases with increase in temperature.

9.  What do you understand by the statement " the solubility of Nacl is 36.5 g at room temperature"?

Ans.  It means that, at room temperature 36.5 g of Nacl can be dissolved in 100 g (or 100 ml) of water.

10.  Salt can be recovered from its solution by evaporation. Can you suggest any other techniques also?

Ans.  Crystallisation method.

11.  Can we separate alcohol dissolved in water by using a separating funnel? If yes, then describe the procedure. If not, explain.

Ans.  No, being miscible they cannot be separated by using a separating funnel.

12.  Why Tyndall effect is not seen in true solution?

Ans.  Because particlee in true solution are too smaller in size to scatter light.

14.  What is homogeneous mixture?

Ans.  A mixture which has a uniform composition throughout is known as homogeneous mixtures or solution. eg: salt in water, sugar in water.

15.  What is heterogeneous mixture?

Ans.  Mixtures which contain physically distinct parts and have non-uniform compositions are called heterogeneous mixtrures. 

eg:  mixture of sodium chloride and iron fillings, salt and sulphur, oil and water.

16.  Give examples for solution, suspension, and colloidal solution.

Ans.  Solution:  copper sulphate and water.

         Suspension:  chalk powder and water.

         Colloidal solution:  milk or ink and water.

17.  What is meant by substance?

Ans.  Mixtures are constituted by more than one kind of pure form of matter, known as a substance. eg: sodium chloride

18.  What is a solution?

Ans.  A solution is a homogeneous mixture of  two or more substances. eg: Lemonade and soda water.

19.  What is alloy?

Ans.  Alloy is a mixture of two or more a metal and a non-metal and cannot be separated into their components by physical methods. ex: brass

20.  What are the components of solution?

Ans.  A solution has a solvent and a solute as its components.

21.  Separate the solute and solvent in the following solutions:
(a) sugar solution       (b)  tincture      (c)  aerated drinks     

Ans.  (a)  sugar -  solute &   water -- solvent
          (b)  iodine - solute  &  alcohol - solvent
          (c)  carbon dioxide - solute  &  water _ solvent

22.  Write the formula for concentration of solution.

Ans.  Concentration of solution =  Amount of solute / Amount of solvent
                                           OR
          Concentration of solution = Amount of solute / Amount of solution.

23.  What is mass percentage of a solution?

Ans.  Mass by mass percentage of a solution = Mass of solute   * 100
                                                                        Mass of solution

         Mass by volume percentage of a solution = Mass of solute   *100      
                                                                           Volume of solution                    

25.  What is Tyndall effect?

Ans.  The scattering of a beam of light is called the Tyndall effect.

                                        
          

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WEIGHT LOSS TIPS

                                 TIPS FOR WEIGHT LOSS

• DRINK PLENTY OF WATER.
• DRINK LUKE WARM WATER AFTER EATING AND BEFORE GOING TO BED AT NIGHT.
• DO EXERCISE LIKE WALKING, CYCLING, SWIMMING, JOGGING, YOGA ETC., DAILY FOR 20 MINUTES REGULARLY.
• EAT HEALTHY DIET LIKE COLORFUL FRUITS AND GREEN VEGETABLES.
• COUNT YOUR CHEWING WHILE EATING FOOD.
• TAKE YOUR DINNER BEFORE 8 P.M. AT NIGHT.
• TAKE YOUR BREAKFAST BETWEEN 8 A.M. TO 9 A.M. IN THE MORNING.
• BE STRESS FREE ALWAYS.
• DANCE AS YOU LIKE IN FREE TIME, MAKES YOUR MIND FREE .
• GO GREEN AND BE HEALTHY.
• INCREASE FRUITS, VEGETABLES, AND WATER AND DECREASE RICE IN YOUR DIET.
• SLEEP FOR 6 TO 8 HOURS DAILY.

Follow the steps and loss your weight easily. have a healthier life for ever.

• SIT AND STAND 5 TIMES FOR EVERY 1 HOUR.
• IN THE MORNING JUST TAKE 20 AB EXERCISE TO REDUCE YOUR TUMMY.
• IN BETWEEN YOUR REGULAR WORK JUST DO ANY EASY EXERCISE FOR 5 TO 10 TIMES.

 AVOCADO plays an important role in diet. Avocado helps in reducing our tummy fat. It also very helpful in the improvement of eye-sight.

PUMPKIN if we take 1 glass of pumpkin juice with salt and pepper, it is really amazing that we loss our weight, especially our belly in 10 days.

OAT PORRIDGE: Oats porridge prepared with buttermilk, salt, garlic, ginger paste and some onions. this porridge plays an important role in our weight loss.

GUAVA: Guava helps in digestion. and makes our stomach cleans up completely.

PINE- APPLE: Saok a piece of pine-apple in water with some mustard seeds (venthayam) at night. in morning take that pine apple piece and grind it well. now filter it and drink in empty stomach. this helps in reducing our belly.