Four students P, Q, R and S have to dissolve maximum amount of sugar in the same amount of water so as to win in a game.
P : Took hot boiling water.
Q : Took ice cold water.
R : Added more water on dissolving sugar in hot water.
S : Took ice cold water and added more water.
Whom do you think would win the game?
In its first year of business, a company had 5 employees. In its second year, there were 25 employees, and in its third year, there were 125 employees. If the pattern continues, how many employees will the company have in the fourth year?
Few statements are given below. Identify the incorrect statements and mark the appropriate option.
(i) In fractional distillation of petroleum, hydrocarbon with lowest boiling point condenses first.
(ii) Useful substances obtained from petroleum and natural gas are termed as ‘Petrochemicals’.
(iii) Coke is used in the extraction of many metals.
(iv) Paraffin wax used in candles, vaseline, grease, polish is obtained by destructive distillation of coal.
A (i) and (ii)
B (i) and (iv)
C (i), (ii) and (iii)
D (ii) and (iv)
It should be d
Which of these differences between insect-pollinated flowers and wind-pollinated flowers is incorrect?
Raman took four similar pots (with a hole at the base) each with equal amount of different type of soil. He then placed these four pots on four similar dishes and poured water slowly on each soil sample. He used a stopwatch to measure the time taken by water to reach the level, he had marked at the same height in each dish.
The results obtained by him were tabulated in the table shown here.
Which soil is the most suitable for a plant that thrives in sandy soil ?
Amit, Rahul and Naveen were given three glass slides I, II and III respectively and a white paper with a cross mark (×). Amit painted his glass slide with a light blue colour. Rahul painted his glass slide with a black paint and Naveen left his slide as it is. They put each of these slides over the mark.
Which of the following statements is correct?
AScales in frogs help them to move easily through water.
BThe eyes on the sides of the head of a lion allow it to have a correct idea about the location of its prey.
CLeaves of submerged aquatic plants are usually narrow and do not possess stomata.
DIn desert plants, roots are poorly developed and are of secondary importance.
answer is c