Hard Chemistry Chapter 01: Solutions Class 12 Level 6

5 ग्राम ग्लूकोज को घोलकर 250 मिलीलीटर विलयन बनाया गया। द्रव्यमान आयतन प्रतिशत कितना है?

5 g glucose is dissolved to make 250 mL solution. What is the mass by volume percentage?

Explanation opens after your attempt
Correct Answer

B. 2 प्रतिशत / 2 percent

Step 1

Concept

Mass by volume percent = gram mass of solute ÷ mL volume of solution × 100.

Step 2

Why this answer is correct

Substitution gives 5 ÷ 250 × 100 = 2 percent.

Step 3

Exam Tip

Final volume is 250 mL, so no separate addition of water volume is needed. चरण 1: द्रव्यमान आयतन प्रतिशत = विलेय का ग्राम द्रव्यमान ÷ विलयन का मिलीलीटर आयतन × १००। चरण 2: मान रखने पर ५ ÷ २५० × १०० = २ प्रतिशत। चरण 3: अंतिम आयतन २५० मिलीलीटर है, इसलिए जल की मात्रा अलग से जोड़ने की जरूरत नहीं है।

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