MODEL TEST PAPERS
[Based on Syllabus, Structure & Model Test Paper Recently Issued by H.P. Board]
CLASS-X (H.P.)
SUBJECT-SCIENCE
TERM-I [Maximum Marks: 50]
Time Allowed : 3 Hours]
Instructions:
1. Question Nos. from 1 to 20 are compulsory and Multiple Choice Type Questions. Each question carries 1 mark.
2. Question Nos. from 21 to 28 are of 2 marks each.
3. Question Nos. from 29 to 31 are of 3 marks each.
4. Question No. 32 is of 5 marks.
5. In some questions internal choice is given.
6. Wherever possible draw diagrams and label them also.
1. Which of the following is not conventional source of energy?
(b) Solar energy
(a) Fossil fuel
(c) Hydro energy
(d) Thermal electricity.
2. The kidneys in human beings are a part of the system for :
(a) Nutrition (c) Excretion
(b) Respiration (d) Circulation.
3. The device used for producing electric current is called: (a) Galvanometer (b) Generator
(c) Ammeter (d) Motor.
4. Identify the substances that are oxidised and the substances that are reduced in the following reaction : 4Na(s) + O2(g) 2Na2O (s) S
5. The frequency of A.C. mains in our country is :
(a) 5 Hz (c) 220 V
(b) 50 Hz (d) 100 Hz.
6. Which one of the following enzymes are found in pancreatic juice?
(a) Amylase and lipase (c) Pepsin and trypsin
(b) Sucrose and amylase (d) Trypsin and lypase.
7. Where is the kidney found in the human body?
(a) Neck (c) In Abdomen
(b) In the Arm (d) In the Stomach.
8. Which of the following enzymes works in acidic environment?
(a) Trypsin
(c) Amylase
(b) Pepsin
(d) Lipase.
9. The function of hemoglobin is:
(a) Carrying oxygen in body
(b) Carrying carbon dioxide in body
(c) Both (a) and (b)
(d) None of the above.
10. AgNO, NaCl- AgCl + NaNO,, this reaction is: 1
(a) Combination (b) Displacement
(c) Double displacement (d) Decomposition.
II. A solution reacts with the ground shell of an egg to produce a gas which turns lime water milky. What will happen in this solution?"
(a) NaCl
(c) LiCI
(b) HCI
(d) KCl.
12. In an electric circuit, a fuse acts like a :
(a) Current amplifying device
(c) Power amplifying device
(b) Voltage amplifying device
(d) Safety device.
13. If three resistors of 10 2,5 and 2 Q2 are combined in parallel arrangement then equivalent resistance of the combination will be:
(a) More than 10
(b) Between 10 and 5
(d) Less than 22.
(c) Between 50 and 2
14. Which of the following is respiration reaction?
(a) Endothermic
(c) Reduction
(b) Exothermic
(d) Precipitation.
15. Lactic acid is found in:
(a) Orange
(c) Lemon
(b) Tamarind
(d) Curd.
16. Food cans are coated with tin and not with zinc because
(a) Zinc is costlier than tin.
(b) Zinc has a higher melting point than tin. (d) Zinc is less reactive than tin.
(c) Zine is more reactive than tin.
Following question have two statements. Answer the given question by selecting the appropriate option.
17. Assertion (A): On freely suspending a current carrying solenoid, it comes to rest in N-S direction just like a bar magnet. Reason (R): One end of current carrying straight solenoid behaves as a North pole and the other end as a South pole.
(a) A is true but R is false
(b) R is true but A is false
(c)Both A and R are true
(d) Both A and R are false.
18. Assertion (A): The strength of an acid or an alkali can be tested by using a scale called the pH scale (0-14) which gives the measure of hydrogen ion concentration in a solution.
Reason (R): A neutral solution has a pH of exactly 7, while an acidic solution has a pH less than 7 and a basic solution a pH more than 7.
(a) Assertion A is true but R is false
(b) Assertion R is true but A is false
(c) Assertion A and R both are true
(d) Assertion A and R both are false.
19. Assertion (A): Forelimbs of vertebrates are homologous organs. Reason (R): Analogous organs have same origin but different functions.
(a) Assertion 'A' is true but 'R' is false (c) Both 'A' and 'R' are true
(b) 'R' is true but 'A' is false
(d) Both 'A' and 'R' are false.
20. Assertion(A): Charcoal is a better fuel than wood for domestic purposes use.
Reason (R): Charcoal burns without flames and does not produce smoke during burning.
(a) 'A' is true but 'R' is false (c) 'A' and 'R' both are true
(b) 'R' is true but 'A' is false
(d) 'A' and 'R' both are false.
Two (2) Marks Questions
21. Why are connecting wires made of copper?
22. What are the two differences between an artery and a vein ?
23. Which gas is usually liberated when an acid reacts with a metal ? Illustrate with an example. How will you test for the presence of this gas?
24. Give an example of characteristics being used to determine how close two species are in evolutionary terms.
25. Oil and fat containing food items are flushed with nitrogen. Why ?
26. Why two magnetic lines of force never intersect each other?
27. What is Geothermal energy?
28. Name some sources of direct current.
Three (3) Marks Questions
29. What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers have limited utility?
30. A copper coil is connected to a galvanometer. What will happen if :
(a) North pole of a bar magnet is inserted into the coil?
(b) A bar magnet is withdrawn from inside the coil ?
(c) A bar magnet is kept stationary inside the coil ?.
Or
List the properties (characteristics) of magnetic lines of force.
31. Describe the process of nutrition in Amoeba.
32. (a) On what factors does the resistance of a conductor depend?
(b) What determines the rate at which the energy is delivered by a current
Or
How many Joules are present in one kilowatt-hour ?
(c) Which among iron and mercury a better conductor ?
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