Ritu is standing in front of a plane mirror. The distance between Ritu and her image is 10 m. If she moves 2 m towards the mirror, then the distance between Ritu and her image is
10 m
8 m
12 m
6 m
You have three test tubes X, Y and Z half-filled with different solutions, as X is filled with sodium chloride solution, Y is filled with sodium hydroxide solution and Z is filled with dilute hydrochloric acid. On adding one drop of phenolphthalein solution to each of the above solutions, you would observe the solutions in the test tubes as
X is pink; Y is pink and Z is colourless
X is colourless; Y is pink and Z is colourless
X is pale green; Y is colourless and Z is red
X is colourless; Y is pale green and Z is pink
In our mouth, the arrangement of different types of teeth from front to back is
incisor-canine-premolar-molar
canine-incisor-molar-premolar
canine-incisor-premolar-molar
incisor-canine-molar-premolar
In plants and trees, water goes up high due to suction pull. Which of the following phenomena causes this suction pull?
Transpiration
Photosynthesis
Respiration
Absorption
Which among the following liquids are conductors of electricity?
A, C and D
B and C
A and C
C and D
C.
A and C
Vinegar is a good conductor of electricity because an aqueous solution of acetic acid dissociates into ions. When sugar is dissolved in water, the solution does not conduct electricity because no ions are formed in the solution. Saltwater is a good conductor of electricity because it is an electrolyte solution and dissociates into ions in aguenes solution. Distilled water does not conduct electricity because it does not contain any impurities.
Consider the following statements.
The correct statements are
A,B and C
A,B and D
B, C and D
A, C and D
A block of wood is lying at rest on a table. What can be said about the force(s) acting on it?
There is no force acting on it
Gravitational and frictional forces are acting on it
There is a pair of balanced forces acting on it
Only gravitational force is acting on it
Which type of leaf pattern, i.e., leaf venation and root type are present in bamboo?
Parallel venation and fibrous root
Reticulate venation and tap root
Parallel venation and tap root
Reticulate venation and fibrous root
Which of the following facts is not correct about magnets?
The attraction is a sure test of magnetism
Magnetic field lines originate from North-pole and merge at South-pole of a magnet
Like poles of a magnet repel each other
The magnetic field is stronger at the poles of a bar magnet