X Chemistry - Carbon and Its Compounds for CBSE

AnonymousNovember 20, 2012 at 3:59 AM
I have been visiting various blogs for online study material for class 10th. I have found your blog to be quite useful. Keep updating your blog with valuable information... Regards
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VI (6th) Fun with Magnets MCQ’s

October 23, 2012

CBSE - Class 6 - Science Chapter :Fun with Magnets Multiple choice Questions (1) When a magnet is suspended freely it always aligns itself in -------- direction? a) North b) N-S c) N-W d) N-E (2) ---------- is the only natural magnet. a) Magnetite b) Ebonite c) Cobalt d) Nickel (3) Which of the following cannot be used to make a magnet? a) Cobalt b) Iron c) Ebonite d) Steel (4) Which of the following is not a non-magnetic substance? a) Glass ...

IX Biology:Extra marks Guess Solved Question paper : Cell and its Function

June 16, 2012

IX The Cell & Fundamental Unit of life Question : Why is the cell known the 'fundamental and structural unit of life ' Ans: ell is called as the structural and functional unit of the living organism because it the smallest living entity that is capable of an independent existence. Separated cell organelles cannot be said to be living and are not capable of independent existence. Question : what is a semi permeable membrane? what are the differences between semi permeable membrane and selectively permeable membrane? Ans: a semi permeable membrane is a membrane that allows only the entry of substances that are helpful for the body. a semi permeable membrane is also called a selectively permeable membrane. Question : Which cell in the human body does not have the mitochondria? Ans: Mature erythrocytes don't have mitochondria Question : What are plastids? Write their functions? Ans: Plastids are double membrane organelle...

Magnetic Effects of Electric Current - CBSE Board Test Questions for class 10

June 10, 2013

Central Public School,Samastipur and Sadhana Devi Vidyapith Assignment SA-1 Chapter: Magnetic Effects of Electric Current Section-A [1marks] 1. What does the direction of thumb indicate in the right-hand thumb rule? 2. What is the frequency of alternating current in India? 3. How will you use a solenoid to magnetize a steel bar? 4. An alternating electric current has a frequency of 50 Hz. How many times does it change its direction in one second? 5. Name devices which produce: (i) alternating current, (ii) direct current. 6. Name the physicist who discovered the magnetic effect of the electric current. 7. A straight copper conductor is held parallel to the axis of a freely suspended magnetic needle such that the conductor is under the needle and the current is flowing from south to north. In which direction the north of magnetic needle will move? 8. If a copper conductor carrying a current is held in north-south direction, in which direction will its magnetic ...

X Solved:The Human Eye and the Colorful World :Chapter – 11

November 14, 2012

Chapter – 11 The Human Eye and the Colorful World Q 1. What is meant by power of accommodation of the eye? Ans. The ability of the eye lens to adjust its focal length, so as to clearly focus rays coming from distant as well a near objects on the retina, is called the power of accommodation of the eye. Q2. A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision? Ans. A person with a myopic eye should use a concave lens of focal length 1.2 m so as to restore proper vision. Q 3. What is the far point and near point of the human eye with normal vision? Ans. For a human eye with normal vision the far point is at infinity and the near point is at 25 cm from the eye. Q 4. A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected? Ans. The student is suffering from myopia...

Class IX assignment Chapter: Sound

December 19, 2012

9 th Chapter: sound –Guess Questions for practice 1. If you place some small blades on a drum, what will you observe when you beat this drum with a drum stick? Explain. 2. Describe an activity with a (a) metre scale (b) rubber band to show that only a vibrating body produces sound. 3. With the help of tuning fork demonstrate that sound is produced by a vibrating body. 4. What is vibrating in the following musical instruments producing by a musical sound? (a) Violin (b) drum (c) saxophone (d) flute (e) guitar (f) dholak (g) tabla (h) sitar 5. What is medium? What constitutes the medium? 6. Describe an activity to show sound travels faster through a solid medium than through a gaseous medium. 7. Describe an activity to show sound travels faster through a solid medium than through a liquid medium. 8. Describe the experiment to demonstrate that waves do not c...

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