Class 10 Science Term 2 Sample Paper 2022 (Unsolved)

Science Term 2 Sample Paper 2022 (Unsolved)

Class 10 Science Term 2 Sample Paper 2022, (Science) exams are Students are taught thru NCERT books in some of the state board and CBSE Schools. As the chapter involves an end, there is an exercise provided to assist students to prepare for evaluation. Students need to clear up those exercises very well because the questions inside the very last asked from those.

Sometimes, students get stuck inside the exercises and are not able to clear up all of the questions. To assist students, solve all of the questions, and maintain their studies without a doubt, we have provided a step-by-step NCERT Sample Question Papers for the students for all classes. These answers will similarly help students in scoring better marks with the assist of properly illustrated Notes as a way to similarly assist the students and answer the questions right.

Class 10 Science Term 2 Sample Paper 2022

General Instructions:

(i) All questions are compulsory.

(ii) The question paper has three sections and 15 questions.

(iii) Section – A has 7 questions of 2 marks each; Section – B has 6 questions of 3 marks each; and Section – C has 2 case based questions of 4 marks each.

(iv) Internal choices have been provided in some questions. A student has to attempt only one of the alternatives in such questions.

Section – A

1. A functional group is a group of atoms in a molecule with distinctive chemical properties, regardless of the other atoms in the molecule. The atoms in a functional group are linked to each other and to the rest of the molecule by covalent bonds. Write the names of functional group of the compounds given below:        [2]

(a) CH3–COOH

(b) CH3–CH2–CH2–OH

2. The atomic radii of first group elements are given below:       [2]

A picture containing tableDescription automatically generated

(a) State the reason behind the observed trend in the above elements.

(b) How does valency of an element vary across a period?

3. (a) What is meant by vegetative propagation?

(b) How will a plant be benefitted if it reproduces by this method?       [2]

4. (a) Write one main difference between asexual and sexual mode of reproduction.

(b) Which species is likely to have comparatively better chances of survival-the one reproducing asexually or the one reproducing sexually? Justify your answer.        [2]

5. Reema is doing a school project on evolution. She is confused in the scientific terms such as inheritance and heredity. Help her to find the correct answers for the scientific terms for the phenomena given below.         [2]

(a) The mechanism by which variations are created and inherited.

(b) The development of new type of organism formed from the existing ones.

OR

How do Mendel’s experiment show that traits are inherited independently?       [2]

6. It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving :         [2]

(a) alpha particle,

(b) neutrons?

Justify your answer

OR

In the given diagram, crosses ⨂ represent a uniform magnetic field directed into the paper. A conductor XY moves in the field toward right side.

(a) Find the direction of induced current in the conductor.

(b) Name the rule applicable here. Justify your answer.

7. Ravi is eating curd/yogurt. For this food intake, which trophic level of the food chain he has occupied? Who will be at the first trophic level in the food chain? Justify your answer.      [2]

OR

From the following groups of living things:

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(a) Create a food chain which is the most advantageous for human being in terms of energy.

(b) Construct a food web using the living things mentioned above.

Section – B

8. An element ‘M’ has atomic number 12.       [3]

(a) Write its electronic configuration and valency.

(b) Is ‘M’ a metal or a non-metal? Give reason in support of your answer.

(c) Write the formula and nature (acidic/basic) of the oxide of M.

9. Give reason why carbon can neither form C4+ cations nor C4– anions, but forms covalent compounds. Also, state the reason to explain why covalent compounds are bad conductors of electricity and have low melting and boiling points ?        [3]

OR

Define the following compounds:

(a) Alkanes

(b) Alkenes

(c) Alkynes

10. How many pairs of chromosomes are there in human beings? How is the sex of human offspring determined? Explain.      [3]

11. (a) State the relation correlating the electric current flowing in a conductor and the voltage applied across it. Also, draw a graph to show this relationship.        [2]

(b) Find the resistance of a conductor if the electric current flowing through it is 0.35 A when the potential difference across it is 1.4 V.          [1]

12. Help Sunita to find the readings of the ammeter and the voltmeter when key is closed? Justify your answer.         [3]

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OR

(a) Define electrical resistivity.

(b) Calculate the resistance of 1 km long copper wire of cross-section area 2 x 10-2cm-2.

[Resistivity of copper 1.62 x 10-8Ω m] [3]

13. The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere around 15-30 km above the earth’s surface. It covers the entire planet and protects life on earth.         [3]

(a) Explain the role of UV radiation in producing ozone layer. Mention the reaction involved.

(b) Why the amount of ozone in the atmosphere dropped sharply in the 1980’s ?

Section – C

This section has 02 case-based questions (14 and 15). Each case is followed by 03 sub-questions (a), (b), (c). Parts (a) and (b) are compulsory. However, an internal choice has been provided in part (c).

14. Seema crossed pure breed pea plants having round-yellow seeds with wrinkled green seeds and found that only A-B type of seeds were produced in the F1 generation. When F1 generation pea plants having A-B type of seeds were cross-breed by self-pollination, then in addition to the original round yellow and wrinkled green seeds, two new varieties A-D and C-B types of seeds were also obtained.

(a) What type of seeds are A-B type of seeds?       [1]

(b) Which types of traits are A and B. Dominant or recessive?       [1]

(c) What type of cross is the above cross? Define the type of cross.    [2]

OR

Differentiate gene and allele.

15. Richa is performing an experiment on magnetism for which she has used two magnets A and B. She felt that here was an attraction between the magnets. So, she drew the magnetic field lines as below. But her teacher said that the diagram was wrong.

(a) Why the diagram was wrong?     [1]

(b) Draw the correct diagram.           [1]

(c) What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?     [2]

OR

Meena draws magnetic field lines of field close to the axis of a current carrying circular loop. As she moves away from the centre of the circular loop she observes that the lines keep on diverging. How will you explain her observation?            [2]

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