Step 1: Characteristics of hazardous waste as per rules. According to the Hazardous Waste (Management and Handling) Rules, 2016, a waste is classified as “characteristic” hazardous waste if it exhibits any of the following characteristics:
Ignitability: The waste is flammable or combustible under standard conditions.
Reactivity: The waste reacts violently with water, air, or other substances, potentially causing explosions or toxic gas releases.
Toxicity: The waste contains toxic substances that pose a risk to human health or the environment when improperly managed.
Step 2: Analyze the options.
Ignitability: Correct, as it is one of the characteristics of hazardous waste.
Reactivity: Correct, as it is a key property defining hazardous waste.
Radioactivity: Incorrect, as radioactive waste is regulated separately under specific guidelines.
Toxicity: Correct, as toxic substances in waste contribute to its hazardous classification.
A regular dodecagon (12-sided regular polygon) is inscribed in a circle of radius \( r \) cm as shown in the figure. The side of the dodecagon is \( d \) cm. All the triangles (numbered 1 to 12 in the figure) are used to form squares of side \( r \) cm, and each numbered triangle is used only once to form a square. The number of squares that can be formed and the number of triangles required to form each square, respectively, are:
In the given figure, the numbers associated with the rectangle, triangle, and ellipse are 1, 2, and 3, respectively. Which one among the given options is the most appropriate combination of \( P \), \( Q \), and \( R \)?