Concept:Understand basic metric conversions and Indian number system prefixes like lakh and crore.Explanation:Option A: 1 kilogram = 1000 grams. One-hundredth of 1 kg = 1/100 × 1000 g = 10 g. So 1 gram is not one-hundredth of 1 kg. This statement is false.Option B: 1 cm = 10 mm. One-tenth of 1 cm = 1/10 × 10 mm = 1 mm. The statement is correct.Option C: 1 lakh = 100000. Hundred thousand = 100 × 1000 = 100000. They are equal. Correct.Option D: 1 crore = 10000000. One-hundredth of a crore = 1/100 × 10000000 = 100000 = 1 lakh. Correct.Answer:Option A is not correct.