Wednesday, 12 November 2014

Chapter 10. Mensuration CBSE Class VI (6th) Mathematics | Exercise 10.3 - Solutions

Things to remember...
  • Area of a rectangle = length × breadth
  • Area of the square = side × side
Question 1. Find the areas of the rectangles whose sides are :
(a) 3 cm and 4 cm
(b) 12 m and 21 m
(c) 2 km and 3 km
(d) 2 m and 70 cm

Tuesday, 11 November 2014

Chapter 10. Mensuration | CBSE Class 6th (VI) Mathematics | Exercise 10.2 - Solutions

Things to remember...
  • The amount of surface enclosed by a closed figure is called its area.
  • Surface Area of a figure  can be broken into exact numbers or approximate numbers of square units
  • Depending upon the figure, some of square units may be completely covered, or partially covered.
  • While using a squared paper, to calculate the area of a figure , we may use the  conventions :

Monday, 10 November 2014

Chapter 10. Mensuration | CBSE Class 6th (VI) Mathematics | Exercise 10.1 - Solutions

Things to remember...
  • Perimeter is the distance covered once along the boundary of a closed figure .
  • Perimeter of a rectangle = 2 × (length + breadth)
  • Perimeter of a square = 4 × length of a side
  • Perimeter of an equilateral triangle = 3 × length of a side
Question 1. Find the perimeter of each of the following figures :

Sunday, 9 November 2014

Chapter 11. Work and Energy - Science | MCQ - Multiple Choice Questions | CBSE Class 9th

Question 1. A dog weighing 25 kg, while chasing a cat, jumps over a fence of height 1.6 m. What is the potential energy of dog at the top of fence ?
(Take gravity due to earth 'g'=10 m s-2 )


(a) 160 Joules
(b) 320 Joules
(c) 380 Joules
(d) 480 Joules

Answer. (c) 380 Joules

Sunday, 26 October 2014

Chapter 10. Gravitation | Physics | MCQ - Multiple Choice Questions | CBSE Class 9th

Question 1. The value of acceleration due to gravity on the surface of the earth at sea level is

(a) 4.9 m/s2
(b) 6 m/s2
(c) 8 m/s2
(d) 9.8 m/s2

Answer. (d) 9.8 m/s2

Saturday, 25 October 2014

Chapter 9 Force And Laws Of Motion | Physics | MCQs | Class 9th | - Multiple Choice Questions

Question 1. An object of mass 6 kg is sliding on  horizontal surface, with a uniform velocity of 8 m/ s . Assuming force of friction offered by the surface to be zero,  The force required to maintain the motion of object  with the same uniform velocity is

(a) 0 Newton
(b) 2 Newtons
(c) 8 Newtons
(d) 32 Newtons

Answer. (a) 0 Newton

Chapter 8 Motion | Physics | MCQs | Class 9th | - Multiple Choice Questions

Question 1. A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is

(a) zero km
(b) 10 km
(c) 30 km
(d) 50 km

Answer. (c) 30 km

Wednesday, 13 August 2014

Chapter 12. Electricity | CBSE Class X (10th) Science | Solved Exercises

Multiple Choice Questions - MCQs : Chapter 12. Electricity | CBSE Class 10th Science


Question 1. What happens to the resistance of circuit if current through it is doubled ?
(a) Resistance is doubled
(b) Resistance becomes half
(c) Resistance remains same
(d) None

Answer. (c) Resistance remains same

Question 2. The work done in moving a unit positive charge, across two points in an electric circuit is measure of _____ ?
(a) Current
(b) Potential Difference
(c) Resistance
(d) Power

Chapter 3 Drainage | Geography | CBSE Class 9th | Solved Exercises

Question 1. Choose the right answer from the four alternatives given below:

(i) Which one of the following describes the drainage patterns resembling the branches of a tree?

(a) Radial
(b) Dendritic
(c) Centrifugal
(d) Trellis

Answer : (b) Dendritic


Chapter 13. WHY DO WE FALL ILL | CBSE Class 9th Science | Solved Exercises

Intext Questions | Page 178

Question 1. State any two conditions essential for good health.

Answer : A good health is ideally a state of well-being physically, mentally and socially . The two conditions essential for good health are:
  1. All community members must have access to basic and better health care facilities supported by the qualified medical professionals.
  2. There should be good economic opportunities for all. Community members should be socially well connected for any support or sharing of resources and should have high level of cleanliness and hygiene at personal or community level