Study the given experimental set-up and select the correct observation.
AA homogeneous mixture will be formed in test tubes 4 and 5.
BA heterogeneous mixture will be formed in test tubes 2 and 3 and solute particles will settle at the bottom after some time if left undisturbed.
CComponents in test tubes 5 and 6 are too small in size and hence cannot be separated by filtration.
DA heterogeneous mixture is formed in test tubes 1 and 2 and solute particles will float on the surface of water.
can anyone explain the solution
The bob of a simple pendulum is swinging between points X and Y. It takes 15.6 s to swing thirty times from X to Y and back to X. What is the time period of the pendulum?
can anyone say the solution.
Select the correct statement.
AExpansion gaps are deliberately left between the rails to allow for the contraction of the rails in hot weather.
BSolids, liquids and gases expand to the same extent if equal amount of heat is supplied.
COn cooling, solids contract the least while gases contract the most.
DNone of these
Study the given diagram showing features of a type of
soil 'X' and select the correct option regarding it.
A Plants grow well in it
B It is used to make toys, flower pots, idols, etc.
C It is used to make glasses
D It is found on seashore and also in deserts
Study the given flow chart that shows some ways of garbage disposal.
Which is the best way to dispose the types of wastes listed below?
a. Vegetable peels
b. Tea leaves
c. Animal excreta
d. Used needles and syringes
g. Cold-drink cans
Few Natural resources are classified as:
Some natural resources are
(i) Petrol, diesel
(ii) Coal, petroleum
(iii) Air, water
(iv) Cow dung cakes, sunlight
(v) Forests, minerals
Which of the following represents the correct match?
A P-(iii), (iv); Q-(i), (ii), (v)
B P-(i), (ii), (v); Q-(iii), (iv)
C P-(ii), (v), Q-(i), (iii), (iv)
D None of these is a correct match.
how is cow dung cake a inexaustible resource ?
Five children made the following statements about birds.
Ashok : All birds can fly.
Beena : All birds have a beak.
Ashu : All birds have a backbone.
Shuchi : All birds have an outer covering of feathers.
Siddhi : Most birds lay eggs, while some give birth to their young ones.
Whose statements about birds are true?
AAshok, Beena and Ashu only
BBeena, Ashu and Shuchi only
CAshok, Beena, Shuchi and Siddhi only
DBeena, Ashu, Shuchi and Ashok only
it was very hard
Which of the following converts chemical energy to various forms of energy?
A Electric iron