Question
Two times a number, added to the square of that number,
gives 3. What could be the possible answer for this number?Solution
Let the number be x. According to question, ⇒ 2x + x2 = 3 ⇒ x2 + 2x – 3 = 0 ⇒ x2 – x + 3x – 3 = 0 ⇒ (x – 1)(x + 3) = 0 ⇒ x = 1, -3
Which of the following elements has the maximum number of atoms in their molecular form?         Â
...In which form is iron ore primarily found in nature?
Which substance is a multibranched polysaccharide of glucose used for energy storage in animals and fungi?
The most abundant metal in the Earth's crust is:
Acid rain is caused due to pollution of the atmosphere by:
Which of the following statement regarding Rutherford nuclear model is NOT correct?
What is the chemical formula of rust?
During which operating conditions of an automobile is carbon monoxide content in exhaust gas maximum?
The colour of neutral litmus solution is
Alkali metals have ______.
I. low melting points
II. low densities
