CTET Paper I (Classes I to V) 17 Jan 2022 Solved Paper

Concept:Metric length conversions: 1 km = 1000 m, 1 m = 100 cm, 1 cm = 10 mm.Explanation:First, check kilometer to meter: 1 km = 1000 m, not 100 m. So options A and C are wrong.Second, check meter to centimeter: 1 m = 100 cm, not 10 cm. So option C is wrong.Third, check centimeter to millimeter: 1 cm = 10 mm, not 100 mm. So option B is wrong.Only option D has all three correct conversions.Answer:Option D: $1 km = 1000 m, 1 m = 100 cm, 1 cm = 10 mm$