Skip to main content

Sadhana Devi Vidyapith, Samastipur CBSE Original paper:SUMMATIVE ASSESSMENT – I, 2013 SCIENCE Class – IX

      SUMMATIVE ASSESSMENT – I, 2013 SCIENCE
                            Class – IX    [Code -42OCV1Q]
[Sadhana Devi Vidyapith, Samastipur] CBSE Original paper    

1. Which part of the cell in Eukaryotas organism plays an important role in cellular reproduction?[1]

2.What will be the value of “g” at the pole as compared to the value of “g” at the equator?[1]

3. Distinguish between inter varietal and interspecific hybridization of crop plants? [1]

4. Identify dispersed phase and dispersing medium I the following (a)fog and (b)Cheese[2]

5. Give one word for the following [2]

(a) Group of cells with similar structure and designed to give highest efficiency function.
(b) Process of taking up a permanent shape size and function.
(c) Animal tissue connecting muscles to bones
(d) Kidney shaped cell that enclose stomata.

6. Define uniform circular motion .draw any example related to it.[2]

7. Distinguish three states of matter with respect to following properties: [3]
(a)Density (b)Diffusion (c) Partical motion

8. (a) State the difference between pure substance and mixture giving one example of each?[3]
(b)identify homogenous mixture from the following
 (a) Brass ,(b) Smoke , (c) Tincture of Iodine and (d) Milk

9. Sanchit’s grandmother was not well . he took his grandmother to the hospital .Doctor suggested some blood test and urine test. He went to the diagnostic Labiratory with his grandmother for all these tests.[3] (a)Which technique is used in urine and blood test. 
(b)Mention value shown by Sanchit.


10.Identify the type of tissue (a) Bronchi of the lungs (b) Duct of salivary gland (c)The lining of mouth[3]

11. Answer these questions .[3]
(a)Why cell is called structural and functional unit of life?
(b) Why is plasma membrane is called selectively permeable membrane?
(c) name the factor which decides the movement of water across the plasma membrane.
12. Show that the rate of thw change in momentum of an object is the product of mass and acceleration.[3]

13. (a) Does acceleration tell us about the direction of motion?
(b) A car accelerates uniformly 2m/s to 10m/s in 8 sec. .It then slows down to a final velocity of 4m/s in 6 sec. Calculate the acceleration of car during the first 8 sec. and during last 6 sec. [3]

14. Sate the reason for: [3]
(a) When a man jump out of a boat to the bank of river, the boat moves backward
(b) All the cars are provided with seat belt
(c) It is dangerous to jump out of a moving bus.
15. For each given statement decide whether the statement is refferin distance or displacement.Explain your answer. [3]
(a) How far is your house from school by car?
(b) How far it is from Mumbai to Goa by airplane
(c) The length of Jhelum River?

16.Give two example of fodder crops raised as food for the livestock.
(b) State ant two advantage of using manure

17. “There has been a 4 times increase in the production of food grain from 1960 t0 2004 with only 25% increase in cultivatable land” Mention the step under taken by farmer to achieve this success. [3]

18. Mention three ways that are followed to prevent the weeds in crop field.[3]

19. (a) Describe an activity with diagram to illustrate that no change in temperature takes place when a liquid convert into vapour.
(b)Mention two difference between evaporation and boiling. [5]

20. Difrentiate between physical and chemical change and classify following into physical and chemical change
(a) water freezes into form ice [5]
(b) Sugar dissolving in water
(c) Burning of paper

21. (i) Define tissue .What is the utility of tissue in multicellular organism?
(ii) Are plants and animal made up of the same type of tissue ? If no write three poit of difference. [5]


22. Draw velocity - time graph and prove that v = u + at . A body moving with a velocity of 2 m/s acquire velocity of 10m/s in 5 sec. Find its acceleration[5]

23. (a) newtons first law of motion is also called law of inertia ? Justify this statements.
(b) A plastic and a cricket ball are rolled on a floor with same velocity which one wil cover larger distance before stoping? Give reason.
(c) A truck of mass 1200kg is moving with velocity 72 m/h and it takes 3 sec to stop after breakes are applied .Calculate the force exerted by brakes. [5]

24. Mentin and explain two fress initiative for increasing the water available for agriculter.(b) Explain these term (i) Compost and (ii) green manure [5]

Comments

Post a Comment

CBSE ADDA :By Jsunil Sir : Your Ultimate Destination for CBSE Exam Preparation and Academic Insights

Class 10 Chapter 02 Acid Bases and Salts NCERT Activity Explanation

NCERT Activity Chapter 02 Acid Bases and Salt Class 10 Chemistry Activity 2.1 Indicator Acid Base Red litmus No Change Blue Blue Litmus Red No change Phenolphthalein Colourless Pink Methyl Orange Pink   Yellow Indictors are substance which change colour in acidic or basic media. Activity 2.2 There are some substances whose odour changes in in acidic or basic media. These are called olfactory indicators. Like onion vanilla, onion and clove. These changes smell in basic solution. Activity 2.3 Take about 5 mL of dilute sulphuric acid in a test tube and add few pieces of zinc granules to it. => You will observe bubbles of hydrogen gas on the surface of zinc granules. Zn + H2SO4 --> ZnSO4 + H2 => Pass the Hydrogen gas through the soap solution. Bubbles formed in the soap solution as Hydrogen gas it does not get dissolved in it

Living science ratna sagar class 6 solutions

Ratna sagar living science 6 answers by jsunil. Class6 Living science solution Term-1 Living Science Solution chapter-1 Source of food Download File Living Science Solution chapter-2 Component of food Download File Living Science Solution chapter-3 Fibre to fabric Download File Living Science Sol ch-4 Sorting of material into group Download File Living Science Soln ch-5 Separation of substance Download File Living Science Solution chapter-6 Change around Us Download File Living Science Solution ch-7 Living and Non Living Download File Living Science Solution ch-8 Getting to Know Plants Download File Living Science Sol ch-9 The Body and Its movements Download File Visit given link for full answer Class6 Living science solution Term-II

Class 10 Metal and Non MetalsChapter 03 NCERT Activity Solutions

X Class 10 NCERT Activity Explanation Class 10 Metals and Non Metals Activity 3.1 Page No. 37 Take samples of iron, copper, aluminium and magnesium. Note the appearance of each sample. They have a shining surface. Clean the surface of each sample by rubbing them with sand paper and note their appearance again. They become more shiny. => Freshly cut Metal have shiny surface Activity 3.2 Page No. 37 Take small pieces of iron, copper, aluminium, and magnesium. Try to cut these metals with a sharp knife and note your observations. They are very hard to cut. Hold a piece of sodium metal with a pair of tongs and try to cut it with a knife. Sodium can be cut easily with knife. Hence K and Na are soft metal cut with knife Activity 3.3 Page No. 38 Take pieces of iron, zinc, lead and copper try to strike it four or five times with a hammer. These metals are beaten into thin sheet on hammering. This property of metal is called malleability and metals are called malleable. Activity 3.4 Page

CBSE I NCERT 10th Numerical Problem solved Reflection and reflection of light

Q. 1. A concave mirror of focal length 20cm is placed 50 cm from a wall. How far from the wall an object be placed to form its real image on the wall?  Solution: V= -50 cm F= -20cm From mirror formula 1/u = 1/f – 1/v = -1/20+ 1/50 = - 3/100  U = - 33.3 cm Therefore, the distance of the object from the wall x =  50 – u X = 50 – 33.3 = 16.7 cm. Q.2. An object is placed at a distance of 40cm from a concave mirror of focal length 15cm. If the object is displaced through a distance of 20 cm towards the mirror, By how much distance is the image displaced? Answer: Here f = - 15 cm, u = - 40 cm Now 1/f = 1/u + 1/v Then 1/v = 1/f – 1/u Or V= uf/u-f =( - 40 x -15)/25 = -24 cm Then object is displaced towards the mirror let u1 be the distance object from the Mirror in its new position. Then u1 = -(40-20) = -20cm If the image is formed at a distance u1 from the mirror then v1 = u1f/u1-f = -20X-15/-20+15 = -60 cm. = - 20 x-15/-20+15 = -60 cm. Therefor

Electricity numerical for class 10 CBSE Trend Setter 50 Problems

1. The current passing through a room heater has been halved. What will happen to the heat produced by it? 2. An electric iron of resistance 20 ohm draws a current of 5 amperes. Calculate the heat produced in 30 seconds. 3. An electric heater of resistance 8 ohm takes a current of 15 A from the mains supply line. Calculate the rate at which heat is developed in the heater. 4. A resistance of 40 ohms and one of 60 ohms are arranged in series across 220 volt supply. Find the heat in joules produced by this combination in half a minute. 5. A resistance of 25 ohm is connected to a 12 V battery. Calculate the heat energy in joules generated per minute. 6. 100 joules of heat is produced per second in a 4 ohm resistor. What is the potential difference across the resistor? 7. An electric iron is connected to the mains power supply of 220 V. When the electric iron is adjusted at minimum heating’ it consumes a power of 360 W but at ‘maximum heating’ it takes a power of 840 W. Ca