Which storm moves quickly in a narrow path and has rotating winds upto 300 miles per hour that kick up a cloud of dirt and debris?
Riya performed an experiment as shown below.
Select the correct option regarding it.
A X could be common salt, Y could be sugar and Z could be water.
B If Y is sugar and Z is water then Y can be recovered by evaporating Z.
C Both X and Y are insoluble in solvent Z.
D X is a liquid whereas Y is a solid.
Which of the following statements is/are correct regarding different kinds of soils?
(i) Sandy soil is dry and light and it holds a lot of air and water.
(ii) Loamy soil is a mixture of sand and clay and is good for growing plants.
(iii) Clayey soil is formed of very fine particles and hence does not hold much of water.
(iv) Small stones and pebbles present in soil are called gravel.
B(ii) and (iv)
C(ii), (iii) and (iv)
D(i) and (iv)
The displacement distance
graph of a sound wave is shown in the figure. Which point has the maximum pressure?
The given table shows the degree of angular movement shown by three different skeletal joints X, Y and Z.
|Skeletal joint||Degree of movement|
Which of the following statements is correct regarding this?
(A) Joint X can be the joint between shoulder bone and arm.
(B) Joint Y can be the elbow joint.
(C) Joint Z can be the joint between upper jaw and rest of the skull.
(D) All of these
In an experiment, hydrochloric acid was reacted with calcium carbonate at room temperature and pressure.
If 80 cm3 of gas X was produced then, the number of molecules and mass of gas X given off are respectively
A 3.33 × 10-3, 0.5 g
B 2.15 × 1021, 0.157 g
C 6 × 1023, 7.5 g
D 4 × 1021, 1.5 g
is there anyone who can explain this question's solution
Study the given Venn diagram.
Following statements represent the causes of different kinds of pollution. Which of the following statements hold true for the given Venn diagram?
(i) Factory discharge coming out of a chimney can be included in R.
(ii) Construction work going on at a building site can be included in Q.
(iii) Youngsters dancing in a disco can be included in O.
(iv) Vehicles moving on roads can be included in O.
A(i) and (ii)
B(ii) and (iii)
C(ii) and (iv)
D(ii), (iii) and (iv)