List of practice Questions

A 10 kg object is lifted to a height of 5 meters. Calculate the work done in lifting the object.
A ball is thrown vertically upward with an initial velocity of \( 20 \, \text{m/s} \). Calculate the time taken for the ball to reach its maximum height.
Which of the following shows recessive traits?
How many cells are there in the embryo sac?
Which of the following pyramid is inverted?
Enzymes are basically formed by?
Who proved transforming principle?
What is the genotype of Drosophila showing normal wings?
Which metal ion is required during PCR?
How there is a connection between corona radiata and zona pellucida?

Water that except ______ and not is absorbed by plant. 
 

Defective foetus can be checked by which process?
Which of the following pair of cells are haploid?
In the electrolysis of molten NaCl using inert electrodes, what will be observed at the electrodes?
An aqueous solution of CuSO4 is electrolyzed using platinum electrodes.
Which of the following will be observed at the cathode?
A solution is formed by mixing chloroform (CHCl3) and acetone (CH3COCH3).
Which of the following is true regarding the nature of this solution?
What is the molarity of a solution that contains 0.5 mol of NaCl in 250 mL of solution?
Which of the following is an example of an alkene?
What is the enthalpy change (\( \Delta H \)) for an exothermic reaction?
What is the pH of a solution with a hydrogen ion concentration of \(1 \times 10^{-4}\) mol/L?
Which of the following compounds contains a coordinate (dative) covalent bond?
Which of the following elements has the highest electronegativity?
A particle is moving in a circle of radius 2 m with a constant speed of 4 m/s. What is the centripetal acceleration?
What is the gravitational force between two 5 kg masses placed 2 meters apart? (Take \( G = 6.67 \times 10^{-11} \, \text{Nm}^2/\text{kg}^2 \))
A 10 kg box is pulled with a horizontal force of 50 N on a surface offering a frictional force of 20 N. What is the net acceleration of the box? (Take \( g = 10 \, \text{m/s}^2 \))