Which of the following statements is/are true?
A. Rigidity: It is the property of matter to maintain its shape even if external force acts on it and solids show this property.
B. Fluidity: It is the property of a substance to easily flow and allow change in its shape under external forces and this property is exhibited both by liquids and gases.
Only A is true
A and B both are true
A and B both are false
Only B is true
While whitewashing, Ca(OH)2 reacts slowly with CO2 in air to form a thin layer of _____ on the walls.
Choose the best suitable Venn diagram for the following words:
“Flowers, Fruits, Leaves”
If the roots of the quadratic equation x2 + kx + 9 = 0 are equal, then find the value of k?