MATHEMATICS
CLASS – XII
UNIT TEST
M.M. : 20 Time : 1 hour
General Instructions
(i) All the questions are compulsory.
(ii) Q. No. 1 to 4 carry 1 mark and Q. No. 5 to 8 carry 4 marks each.
1. Find the co-factor of a32 in the following :
icbse maths CBSE Class 12 Mathematics Sample Unit Test
2. Evaluate [ π/3 - sin-1(-1/2)]
3. Find the values of x, y and z from the following equations:
icbse maths1 CBSE Class 12 Mathematics Sample Unit Test
4. If f(x) = x+7 and g(x) = x-7, X ∈R, find fog(7).
5. Let
A =
icbsemaths CBSE Class 12 Mathematics Sample Unit Test
Express A as sum of two matrices such that one is symmetric and the other a skew symmetric matrix.
6. Using matrix method solve the system of linear equations.
x + y + z = 3
2x + y + z = 4
x + 3y + 2z = 6
7. Using properties of determinants, prove that:
icbse maths CBSE Class 12 Mathematics Sample Unit Test
8.(i) Show that * R x R -> R given by a*b = a + 3b is not associative.
(ii) Prove that sin-1 8/17 + sin-1 3/5 = tan-1 77/36
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sábado, 11 de diciembre de 2010
CBSE Class 12 Sample Paper of Biology 2011, CBSE Sample Paper of Biology Class 12
Sample Paper for CBSE PMT/PET/AIEEE
Biology Class 12
REPRODUCTION IN ORGANISM
Max Marks – 35
Time – 1 hour
* Q.01 to Q.10 (1 marks)
* Q.11 to Q.13 (2 marks)
* Q.14 to Q.16 (3 marks)
* Q.17 to Q.18 (5 marks)
Q .1Both tap worm & earthworm are hermaphrodites. How do they differ from each other with reference to fertilization?
Q.2 Pick out the monoceious plant from the following:
A) Coccinia
B) Mulberry
C) cucumber
D) Date palm.
Q.3 Give An example of dioceious plants.
Q.4 Why are cucurbits refers to as monoceious?
Q.5 Why are date palm refers to as dioceious?
Q.6 Name the plants in which isogamy occurs?
Q.7 Why is reproduction essential for an organism.
Q.8 What is meiocytes?
Q.9 What is meant by homothelic.
Q.10 What is meant by juvenile phase of an organism?
Q.11 What is the mode of asexual reproduction in I) Yeast II) Amoeba III) Hydra IV) Sponges.
OR
Name the method of vegetative reproduction in the following:-
i) Roses
ii) Sugarcane
iii) Bougainvillea
iv) Money plant
v) Straw berry
Q.12 Give the chromosomes no. in the gametes of the following, if the no. of chromosome in their meiocyte is as follows:
I) Dog – 78
II) House fly – 12
III) Rice – 24
IV) Onion-32.
Q.13 What do the following parts of the flower develop into after fertilization.
I) Ovary
II) Zygote
III) Ovary wall
IV) Ovules.
Q.14 Identify each part in the flowering plant & write whether it is n OR 2n.
I) Ovary
II) Anther
III) Egg
IV) Pollen
V) Male gamete
VI) Zygote.
Q.15 Draw the diagram of gemmule of a sponge & labeled 4 parts.
Q.16 Differentiate b/w external fertilization & internal fertilization with an example.
Q.17 What are vegetative propagules? Name any 4 of them along with example.
Q.18 Name the three phases in sexual reproduction of an organism & Mention what major events occur in each of them.
Biology Class 12
REPRODUCTION IN ORGANISM
Max Marks – 35
Time – 1 hour
* Q.01 to Q.10 (1 marks)
* Q.11 to Q.13 (2 marks)
* Q.14 to Q.16 (3 marks)
* Q.17 to Q.18 (5 marks)
Q .1Both tap worm & earthworm are hermaphrodites. How do they differ from each other with reference to fertilization?
Q.2 Pick out the monoceious plant from the following:
A) Coccinia
B) Mulberry
C) cucumber
D) Date palm.
Q.3 Give An example of dioceious plants.
Q.4 Why are cucurbits refers to as monoceious?
Q.5 Why are date palm refers to as dioceious?
Q.6 Name the plants in which isogamy occurs?
Q.7 Why is reproduction essential for an organism.
Q.8 What is meiocytes?
Q.9 What is meant by homothelic.
Q.10 What is meant by juvenile phase of an organism?
Q.11 What is the mode of asexual reproduction in I) Yeast II) Amoeba III) Hydra IV) Sponges.
OR
Name the method of vegetative reproduction in the following:-
i) Roses
ii) Sugarcane
iii) Bougainvillea
iv) Money plant
v) Straw berry
Q.12 Give the chromosomes no. in the gametes of the following, if the no. of chromosome in their meiocyte is as follows:
I) Dog – 78
II) House fly – 12
III) Rice – 24
IV) Onion-32.
Q.13 What do the following parts of the flower develop into after fertilization.
I) Ovary
II) Zygote
III) Ovary wall
IV) Ovules.
Q.14 Identify each part in the flowering plant & write whether it is n OR 2n.
I) Ovary
II) Anther
III) Egg
IV) Pollen
V) Male gamete
VI) Zygote.
Q.15 Draw the diagram of gemmule of a sponge & labeled 4 parts.
Q.16 Differentiate b/w external fertilization & internal fertilization with an example.
Q.17 What are vegetative propagules? Name any 4 of them along with example.
Q.18 Name the three phases in sexual reproduction of an organism & Mention what major events occur in each of them.
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