Question 1 :
On converting 38 °C to kelvin scale, the correct answer will be ________.
Question 2 :
Following are a few definitions of osmosis. Read carefully and select the correct definition.
Question 3 :
Which of the following are homogeneous in nature? (i) ice (ii) wood (iii) soil (iv) air
Question 4 :
The weight of any person on the moon is about $\frac{1}{6}$ times that on the earth. He can lift a mass of 15 kg on the earth. What will be the maximum, mass, which can be lifted by the same force applied by the person on the moon?
Question 5 :
On converting 25 °C to kelvin scale, the correct answer will be_________.
Question 6 :
In case of negative work the angle between the force and displacement is_______.
Question 7 :
An element is sonorous and highly ductile. Under which category would you classify this element?
Question 8 :
Which cell organelle controls most of the activities of the cell?
Question 9 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2a6f59b460d7261f5fc.png' />
The above velocity-time graph shows the motion of a cyclist. Find its velocity
Question 12 :
A student heats a beaker containing ice and water. He measures the temperature of the contents of the beaker as a function of time. Which of the following would correctly represent the result? Give justification for your choice.
Question 13 :
One electron is present in the outer most shell of the atom of an element X. What would be the value of the charge on the ion formed if this electron is removed from the outer most shell?
Question 14 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2a8f59b460d7261f5fe.png' />
The above velocity-time graph shows the motion of a cyclist. Find its acceleration.
Question 16 :
Classify the following organism based on the absence/presence of true coelom (i.e. acoelomate, pseudocoelomate and coelomate) : Horse
Question 17 :
An element is sonorous and highly ductile. What other characteristics do you expect the element to possess?
Question 18 :
A bullet of mass 20 g is horizontally fired with a velocity 150 m $s^{-1}$ from a pistol of mass 2 kg. What is the recoil velocity of the pistol?
Question 20 :
Classify the following organism based on the absence/presence of true coelom (i.e. acoelomate, pseudocoelomate and coelomate) : Spongilla
Question 21 :
On converting 66 °C to kelvin scale, the correct answer will be________.
Question 22 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2a1f59b460d7261f5f5.png' />
What information do you get from the following figures about the valency of atoms X, Y and Z?
Question 24 :
A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back?
Question 25 :
In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula $C_{6}H_{12}O_{6}$. Compute the volume of water so consumed assuming the density of water to be 1 g $cm^{-3}$.
