Krishang dropped a piece of stone and one teaspoon of sugar into a beaker containing water. He noticed that after sometime only the stone remained at the bottom. Which of the following conclusions can be made by Krishang?
ASugar is soluble and heavier than water whereas stone is insoluble and lighter.
BSugar is soluble and lighter than water whereas stone is insoluble and heavier.
CBoth sugar and stone are heavier than water. However, sugar is soluble whereas stone is not.
DBoth sugar and stone are lighter than water. However, sugar is soluble whereas stone is not.
Look at the two objects below.
From the following statements, pick out those which are true.
1. Cotton is heavier than iron.
2. Both the objects have the same volume.
3. Both the objects are solid.
4. Both the objects are waterproof.
5. Both the objects have same mass.
A 1 and 2
B 3 and 5
C 4 and 5
D 3 and 4
The surroundings where organisms live is called __________________and ______________________ help living things to survive in their surrounding. There are some changes that can happen in an organism over a short period of time to help them adjust to the changes in their surroundings. These changes are called _____
AHabitat, acclimatization, adaptations
BTerrestrial habitat, acclimatization, habit
CHabitat, adaptations, acclimatization
DHabit, adaptations, acclimatizations
I had put option D but the answer is given as C. There is only a difference in the plural and singular forms of acclimatization in D and C. The one in D is more appropriate through the sentence but C too might be correct. Pls help.
Avin tied a small stone to one end of a string that he had. Then he held the other end of the string and started whirling it, initially slowly, then faster and faster. Which of the following statements is incorrect?
AThe stone always undergoes circular motion.
BThe distance of the stone from Avin's hand keeps changing.
CThe stone undergoes non-periodic motion.
DBoth B and C.
Consider the following statements regarding the precautions to be taken inside the house during a thunderstorm.
I. No phone calls should be made using a wired phone.
II. Electrical appliances such as lights and fans should be switched off.
III. Bathing with running water should be avoided.
IV. The metal doors should be closed during a thunderstorm.
Among the given statements,
Aonly I is incorrect
Bonly II is correct
Cboth I and III are correct
Dboth II and IV are correct