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Class 6	Science Mathematics Social Science	English Hindi Computer
Class 7	Science Mathematics Social Science	English Hindi Computer
Class 8	Science Mathematics Social Science	English Hindi Computer
Class 9	Science Mathematics Social Science	English Hindi Computer
Class 10	Science Math Social Science	English Hindi Computer
Class 11	Physics Chemistry Biology	Mathematics English Economics
Class 12	Physics Chemistry Biology	Mathematics English Economics
Class 5	EVS
College Entrance	Jamia Millia Islamia Aligarh Muslim University Banaras Hindu University

2011

Q1
Name two decomposers operating in our environment.

Solution

Q2
What is meant by a biodegradable waste?

Solution

Q3
Draw the structure of the hexanal molecule,C5H11CH0

Solution

Q4
Name the type of particles which act as prisms in the formation of rainbow in the sky.

Solution

Q5
How does an embryo get nourishment inside the mother’s body?

Solution

Q6
(a) How does the size of atoms of elements vary down a group in the periodic table?Why is it so? (b) What does the tendency to lose electrons vary down a group in the periodic table? Give reason.

Solution

Q7
What is a spectrum? Why do different coloured rays deviate differently on passing through a glass prism?

Solution

Q8
What are homologous organs? Can the wings of a butterfly and the wings of a bat be regarded as homologous? Why?

Solution

Q9
Describe two examples of different oxidations of ethanol. Name the products obtained in each case.

Solution

Q10
(a) What are the values of (i) near point and (ii) far point of vision of a normal adult person? (b) A student has difficulty in reading the blackboard while sitting in the last row. What could be his defect of vision? Draw a ray diagram to illustrate this defect of vision.

Solution

Subjects

2011

Q1 Name two decomposers operating in our environment.

Solution

Q2 What is meant by a biodegradable waste?

Solution

Q3 Draw the structure of the hexanal molecule,C5H11CH0

Solution

Q4 Name the type of particles which act as prisms in the formation of rainbow in the sky.

Solution

Q5 How does an embryo get nourishment inside the mother’s body?

Solution

Q6 (a) How does the size of atoms of elements vary down a group in the periodic table?Why is it so? (b) What does the tendency to lose electrons vary down a group in the periodic table? Give reason.

Solution

Q7 What is a spectrum? Why do different coloured rays deviate differently on passing through a glass prism?

Solution

Q8 What are homologous organs? Can the wings of a butterfly and the wings of a bat be regarded as homologous? Why?

Solution

Q9 Describe two examples of different oxidations of ethanol. Name the products obtained in each case.

Solution

Q10 (a) What are the values of (i) near point and (ii) far point of vision of a normal adult person? (b) A student has difficulty in reading the blackboard while sitting in the last row. What could be his defect of vision? Draw a ray diagram to illustrate this defect of vision.

Solution

Subjects

Q1
Name two decomposers operating in our environment.

Q2
What is meant by a biodegradable waste?

Q3
Draw the structure of the hexanal molecule,C5H11CH0

Q4
Name the type of particles which act as prisms in the formation of rainbow in the sky.

Q5
How does an embryo get nourishment inside the mother’s body?

Q6
(a) How does the size of atoms of elements vary down a group in the periodic table?Why is it so? (b) What does the tendency to lose electrons vary down a group in the periodic table? Give reason.

Q7
What is a spectrum? Why do different coloured rays deviate differently on passing through a glass prism?

Q8
What are homologous organs? Can the wings of a butterfly and the wings of a bat be regarded as homologous? Why?

Q9
Describe two examples of different oxidations of ethanol. Name the products obtained in each case.

Q10
(a) What are the values of (i) near point and (ii) far point of vision of a normal adult person? (b) A student has difficulty in reading the blackboard while sitting in the last row. What could be his defect of vision? Draw a ray diagram to illustrate this defect of vision.