Observe the given figure and read the following passage regarding it. As Sushil pushes the carton up the ramp, 'P' energy from the food that Sushil has eaten changes into 'Q' energy of the carton. When the carton reaches the deck of the lorry, this energy is stored in the carton as 'R' energy. However, some of the energy from Sushil is lost as 'S'. Select the correct statements regarding energies P, Q, R and S.
1. S makes us feel warm.
2. P energy is ultimately derived from solar energy.
3. The faster an object moves, the greater is R energy.
4. The higher the object is, the more Q it has.
A2 and 4 only
B1 and 2 only
C3 and 4 only
D2 and 3 only
i think b is the answer.
A toy car when released (without applying any force) from point Q of the ramp travels towards point P. What is/are the force(s) responsible for making the car to reach point P?
a. Earth's gravity
b. Earth's magnetic field
c. Frictional force between the wheels and the ramp
Cb. and c. only
Da., b. and c
can be option b
Meena planted tape grass in a pot of soil and watered it regularly. After a few days, the plant died. Which of the following is the most appropriate reason for it?
(A) Tape grass flourishes more on ground than in pot.
(B) Tape grass is an aquatic plant.
(C) Tape grass does not require regular watering.
(D) Water might be of bad quality.
answer is b
A teacher showed the following plants to students and asked them to write their methods of reproduction.
Given below are answers written by the students :
Student P:W, X and Y propagate vegetatively through stem.
Student Q:W and X are rhizomes which propagate vegetatively through roots.
Student R:Z is called bulbil which propagates vegetatively through stem.
Student S:Y vegetatively propagates through roots.Which students wrote the correct answer?
AStudents P and S
BOnly Student S
CStudents Q and R
DOnly Student Q
Spinning of earth on its own axis is called __________. The earth rotates from __________ to __________. One complete rotation takes __________. Fill the given paragraph and select the correct option.
ARotation, West, East, 24 hours
BRotation, East, West, 24 hours
CRevolution, North, South, 365 days
DRevolution, South, North, 3651/4days
earth rotates from east to west or west to east?
When a cell is put in a solution of higher concentration __________ occurs and the cell ________.
A Endosmosis, swells
B Exosmosis, shrinks
C Endosmosis, shrinks
D Exosmosis, swells
if the concentration of the solution is higher, the cell will sell and not shrinks, what is wrong with these guys