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Equilibria
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1
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249
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January 4, 2019
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States of matter ( Gaseous State)
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2
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289
|
January 4, 2019
|
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Electrophile and Nucleophile
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2
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255
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January 4, 2019
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Steel balls sink in water but they don’t sink in mercury. Why?
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3
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377
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January 4, 2019
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What is pasteurization?
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2
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252
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January 3, 2019
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Why is it difficult to run fast on sand?
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3
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644
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January 3, 2019
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Why do we slip on a rainy day?
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3
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262
|
January 3, 2019
|
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If the sun somehow collapsed to form a black hole, what effect would this event have on the orbit of the earth?
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2
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246
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November 10, 2018
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What do you mean by geo-stationary satellite? Explain?
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2
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188
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November 10, 2018
|
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Explain why the moon has no atmosphere?
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2
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202
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November 10, 2018
|
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How does ‘g’ at a point vary with distance from the centre of the earth? Where is the highest value of ‘g’? Explain
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2
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214
|
November 10, 2018
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Why an astronaut in a space capsule orbiting the earth experiences a feeling of weightlessness?
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2
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181
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November 10, 2018
|
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What will happen to the value of ‘g’ if the earth stops rotating?
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2
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192
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November 10, 2018
|
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Why are roads banked on curved path?
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2
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274
|
November 10, 2018
|
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Explain why a cyclist bend while going along curved road?
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2
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310
|
November 10, 2018
|
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A solid tied at the end of a string is revolved in vertical. At what point the tension in the string will be the greatest?
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2
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218
|
November 10, 2018
|
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When a bus takes a turn, passengers are thrown away from the centre of the curved path. Why?
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2
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320
|
November 10, 2018
|
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How will you justify that stone is more rigid than iron?
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2
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281
|
November 10, 2018
|
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If a cork is released from the bottom of a jar filled with water, what will happen and why?
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2
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240
|
November 10, 2018
|
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How will you make difference between density and specific gravity of a body?
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2
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188
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November 10, 2018
|
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A cork is floating in water. What is the apparent weight of the cork?
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2
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191
|
November 10, 2018
|
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A helium filled balloon rises to a certain height and then halts. Why?
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2
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263
|
November 10, 2018
|
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What are centre of buoyancy andmetacentre?
|
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2
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158
|
November 10, 2018
|
|
State the laws of flotation
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2
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187
|
November 10, 2018
|
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Does a ship sink more in river water or in sea water? Explain
|
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2
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161
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November 10, 2018
|
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Why is the bottom of a ship made heavy?
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2
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167
|
November 10, 2018
|
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Why does ice float in water?
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2
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203
|
November 10, 2018
|
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The earth moving round the sun in an orbit is acted upon by a force; hence the work must be done on the earth by this force
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2
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275
|
November 8, 2018
|
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How does K.E. of an object change if its momentum is doubled?
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2
|
164
|
November 8, 2018
|
|
Distinguish between conservative and non-conservative force
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2
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164
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November 8, 2018
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