General Instructions:
(i)This question paper consists of 39 questions in 5 sections.
(ii)All questions are compulsory. However, an internal choice is provided in some
questions. Astudent is expected to attempt only one of these questions.
(iii)Section A consists of 20 objective type questions carrving l mark each.
(iv) Section B consists of 6 Very Short questions carrying 2 marks each. Ansuers to
these questions should be in the range of 30 to 50 words.
(v)Section Cconsists of 7 Short Ansuer type questions carrying 3 marks each.
Answers to these questions should be in the range of 50 to S0 words.
(vi) Section D con sists of3 Long Answer type questions carrying 5 marks each.
Answers to these questions should be in the range of S0 to 120 words.
(wii) Section E consists of 3source-based / case-based units of assessment of 4 marks each with sub-parts.
Section-A
Select and write the most appropriate option out of the four options givenfor each of the questions 1-20. There is no negative mark for incorrect response.
1. Two beakers A and B contain normal water and hot water respectively. Seema adds an cqual amount of blue copper sulphate cryst.als to them. Which of the following observations is correct ‘?
(a)Blue colour will spread nore quickly in A.
(b)Blue colour will not spread in either of the beakers.
(c)Blue colour will spread more quickly in B.
(d)Blue colour will take the same time in both Aand B to spread.
2. Melting points of four solids A B Cand D are 368 K. 45 K, 180 K and b80 K.
Arrange them in increasing order of interparticle forces of attraction. (1)
(a)A<B<C<D
(b)B<C<A<D
(c)C<B<A<D
(d)B<D<C<A
3.The image shows two changes.
Water at 0ยฐC
Process X
Water at 25ยฐC
Water at 25ยฐC
Process Y
Water at 100ยฐC
Identify Process X and Y.
(a) Process X melting point; Process Y – evaporation
(b) Process X freezing point; Process Y – melting
(c) Process X condensation; Process Y melting
(d) Process X – evaporation; Process Y condensation
4. Which of the following are physical changes ? (1)
(i) Melting of iron metal
(ii) Rusting of iron
(iii) Bending of an iron rod
(iv) Drawing a wire of iron metal
(a) (i), (ii) and (iii)
(b)(i), (ii) and (iv)
(c)(i), (iii) and (iv)
(d)(i), (iii) and (iv)
5. Study the diagrams representing mixtures, elements and compounds shown,
and choose the correct statement from the following :
(a) A represents an element and D represents a mixture.
(b) B represents a compound and C represents a mixture.
(c) A represents an element and Crepresents a mixture.
(d) B represents an element and D represents a mixture.
6.Which of the following is an example of gas in liquid mixture ? (1)
(a) Air
(b) Aerated drink
(c) Alcohol and water
(d) Alloy
7.Substances that contain more than one element or compound which are not in
fixed ratio are classified into I and II ia the image. Identify I and II.
(a) I- heterogeneous mixture; II homogeneous mixture
(b) Both I and II are heterogeneous mixture
(c) Both I and II are homogeneous mixture
(d) I- homogeneous mixture; II – heterogeneous mixture
8. X and Y are cell organelles bound by a single membrane. X is filled with
digestive enzymes and Y is filled with cell sap. Select the incorrect statement regarding X and Y.
(a) X is a waste disposal system whereas Y is a storage sac for liquid or solid contents.
(b) X takes part in autophagy and Y takes part in osmoregulation.
(c) X is exclusive to plant cells and Y is exclusive to animal cells. (d) X is a digestive bag whereas Y is a storage bubble of cells.
9.Prokayrotic cells lack most of the cytoplasmic organclles prescnt in eukaryotic
cells except one. Identify it. (1)
(a)Lysosome
(b)Ribosome
(c)Plastid
(d)Nucleus
10.A student observes that the tree near his house is growing more in width than height. Which tissue is responsible for this type of growth ?
a) Twice of the parent cell
(b) Both apical, and intercalary
(c) Only intercalary
(d) Only lateral
11.After mitosis, the number of chromnosomes in the daughter cells shall be:
(a) Twice of the parent cell
(b) One fourth of the parent cell
(c) One half of the parent cell
(d) Same as the parent cell
