Question 1

Assertion (A) : White silver chloride turns grey in sunlight. Reason (R) : Decomposition of silver chloride in presence of sunlight takes place to form silver metal and chlorine gas

Question

(a)Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion. (c) Assertion is ...

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Class 10 science 3 years 1 Answer 4419 views Enlightened -2

Question 2

.Assertion (A) : When HCl is added to zinc granules, a chemical reaction occurs. Reason (R) : Evolution of a gas and change in colour indicate that the chemical reaction is taking place

Question

(a)Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion. (c) Assertion is ...

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Class 10 science 3 years 1 Answer 2281 views Enlightened -2

Question 3

Vinita and Ahmed demonstrated a circuit that operates the two headlights and the two sidelights of a car, in their school exhibition. Based on their demonstrated circuit, answer the following questions.

Question

(i) State what happens when switch A is connected to a) Position 2 b) Position 3 (ii) Find the potential difference across each lamp when lit. (iii) Calculate the current a) in each 12 Ω lamp when lit. b) In ...

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CBSE Sample Paper 1 year 1 Answer 2267 views Tech Professional -2

Question 4

. Assertion: Chemical reaction changes the physical and chemical state of a substance. Reason: When electric current is passed through water (liquid), it decomposes to produce hydrogen and oxygen gases.

Question

(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. · (b) Both Assertion and Reason are true but Reason is not the correct -explanation of Assertion. (c) Assertion is true but Reason is false.(d) ...

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Class 10 science 3 years 1 Answer 2200 views Enlightened 1

Question 5

Assertion: A current carrying conductor experience a force in the magnetic field. Reasoning: The force acting on a current carrying conductor in a magnetic field is due to interaction between magnetic fields produced by the conductor and external magnetic field.

Question

(a)Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion. (c) Assertion is ...

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Class 10 science 3 years 1 Answer 2187 views Enlightened -1

Question 6

Assertion: Highly reactive metals are obtained by electrolytic reduction of their molten ore. Reason: Highly reactive metals can be extracted by chemical reduction.

Question

(a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion. (c) Assertion ...

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Class 10 science 3 years 1 Answer 1937 views Enlightened 1

Question 7

. Assertion: When calcium carbonate is heated, it decomposes to give calcium oxide and carbon dioxide. Reason: The decomposition reaction takes place on application of heat, therefore, its and endothermic reaction.

Question

(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. · (b) Both Assertion and Reason are true but Reason is not the correct -explanation of Assertion. (c) Assertion is true but Reason is false.(d) ...

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Class 10 science 3 years 1 Answer 1655 views Enlightened -5

Question 8

(i) State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit. (ii) List the factors on which the resistance of a conductor depends.

Question

(i) State the law that explains the heating effect of current with respect to the measurable properties in an electrical circuit. (ii) List the factors on which the resistance of a conductor depends.

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CBSE Sample Paper 1 year 1 Answer 1584 views Tech Professional 1

Question 9

The above image shows a thin lens of focal length 5m.

Question

The above image shows a thin lens of focal length 5m. (i) What is the kind of lens shown in the above figure? (ii) If a real inverted image is to be formed by this lens at a distance of ...

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CBSE Sample Paper 1 year 2 Answers 1335 views Tech Professional 0

Question 10

ASSERTION: The chemical reaction during which hydrogen is lost is called as reduction reaction. REASON: Reducing agent removes hydrogen.

Question

(a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) ...

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Class 10 science 3 years 1 Answer 1154 views Enlightened 0

Question 11

Given below are certain situations. Analyze and describe its possible impact on a person:

Question

Given below are certain situations. Analyze and describe its possible impact on a person: a) Testes of a male boy are not able to descend into scrotum during his embryonic development. b) Vas deferens of a man is plugged. c) ...

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CBSE Sample Paper 1 year 1 Answer 1099 views Tech Professional 0

Question 12

Assertion: Chips manufacturers usually flush bags of chips with gas such as nitrogen to prevent the chips from getting oxidised. Reason: This increase the taste of the chips and helps in their digestion.

Question

(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. · (b) Both Assertion and Reason are true but Reason is not the correct -explanation of Assertion. (c) Assertion is true but Reason is false.(d) ...

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Class 10 science 3 years 1 Answer 1090 views Enlightened 0

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