|
With the help of a labelled diagram, explain its structure
|
|
1
|
4196
|
April 5, 2019
|
|
Which two chemical species represent a pair of isotopes and why?
|
|
1
|
1826
|
April 5, 2019
|
|
Which element(s) do they represent and what is the relationship between them?
|
|
1
|
975
|
April 5, 2019
|
|
Calculate the average density of the Earth
|
|
1
|
1378
|
April 5, 2019
|
|
The criteria for deciding divisions in plants differ from the criteria for deciding the sub-groups among animals
|
|
1
|
658
|
April 5, 2019
|
|
If Newton’s third law holds goods, then why do not action and reaction forces cancel each other, when we walk?
|
|
1
|
1945
|
April 5, 2019
|
|
Rate of evaporation of an aqueous solution decreases with increase in humidity
|
|
1
|
3463
|
April 5, 2019
|
|
What are the immunisation programmes available at the nearest health center in your locality?
|
|
1
|
527
|
April 5, 2019
|
|
Prove that the increase in kinetic energy of the body is equal to the work done by the force on the body
|
|
1
|
3149
|
April 5, 2019
|
|
What did actually happen? What values are associated with Mohan?
|
|
1
|
1235
|
April 5, 2019
|
|
Why does a heavy rifle not kick as strongly as a light rifle using the same cartridge?
|
|
1
|
8177
|
April 5, 2019
|
|
Three boys A, B and C move from point O to point P by the three different paths 1, 2 and 3,
|
|
1
|
684
|
April 5, 2019
|
|
How can you boil water at room temperature without heating it?
|
|
1
|
500
|
April 5, 2019
|
|
State the role of atmosphere in climate control
|
|
1
|
1713
|
April 5, 2019
|
|
Explain the interconversion of three states of matter in terms of force of attraction and kinetic energy of the molecules
|
|
1
|
7309
|
April 5, 2019
|
|
Name the scientists responsible for Nucleus Discoveries
|
|
1
|
487
|
April 5, 2019
|
|
In which experiment, higher percentage of copper will be obtained? Show that these data verify the law of constant proportions
|
|
1
|
538
|
April 5, 2019
|
|
Which law is also known as law of indestructibility of matter? Why?
|
|
1
|
879
|
April 5, 2019
|
|
Why do we tie our seat belts in moving car or landing/take off the plane?
|
|
1
|
1243
|
April 5, 2019
|
|
Honey, a product of beekeeping has become an agricultural enterprise these days. Explain
|
|
1
|
907
|
April 5, 2019
|
|
Density of material in g/cc
|
|
1
|
427
|
April 4, 2019
|
|
Which condition he will observe the maximum loss in weight of the solid?
|
|
1
|
452
|
April 4, 2019
|
|
1.25 g of copper carbonate was added to a beaker containing 20 g of HCl. After completion of chemical reaction
|
|
1
|
1120
|
April 4, 2019
|
|
4g of hydrogen completely reacts with 32g of oxygen. What will be the mass of water thus formed?
|
|
1
|
1020
|
April 4, 2019
|
|
Suggest any two features which make you agree with his decision
|
|
1
|
468
|
April 4, 2019
|
|
Which type of root is found in a pea plant? How do the two root sections differ from one another?
|
|
1
|
688
|
April 4, 2019
|
|
Which portion of temperature-time graph showing heating of ice at -10°C to water at 100°C represent the change of state on heating
|
|
1
|
3581
|
April 4, 2019
|
|
What happens if plasma membrane ruptures or breaks down?
|
|
1
|
1228
|
April 4, 2019
|
|
What is the name of sound waves of frequency too low to hear for human beings?
|
|
1
|
521
|
April 4, 2019
|
|
Define Longitudinal wave, Transverse wave, Loudness, Pitch and Timbre
|
|
1
|
629
|
April 4, 2019
|