Question
What will come in place of the question mark (?) in the
following expression? 25% of 2000 – 50% of 500 = 100% of ?Solution
25% of 2000 – 50% of 500 = 100% of ? 2000 × 0.25 – 500 × 0.5 = 1 × ? 500 – 250 = 1 × ? 1 × ? = 250 ? = 250 ÷ 1 ? = 250
Which of the following does not give effervescence with sodium carbonate?
Which of the following is an example of a colloidal solution?
Marble is a metamorphic rock of:
Which of the following pair of element – atomicity is correct?
I. Helium – monoatomic
II. Oxygen – triatomic
Choose the wrong statement
The washing machine works on the principle of -
A radioactive substance emits?
_____ is the movement of chemicals in the upper layers of soil into lower layers or into groundwater by being dissolved in water.
Who among the following is known for the discovery of atomic-bomb?
What is the maximum value of deforming force up to which a material shows elastic property and above which the material loses it?
