AP Police SI practice question
A solution contains 25 g of copper chloride salt in 250 g of water. Calculate the concentration in terms of mass by mass percentage of the solution.
From a AP Police SI Science practice set · Science
Tap an option to check your answer.
Show answer and explanation
Correct answer: (A) 9.09%
Mass by mass % = (mass of solute / total mass of solution) x 100 = 25/(25+250) x 100 = 25/275 x 100 = 9.09%.
हिंदी में प्रश्न
अभिकथन-कारण कथन के संबंध में कृ पया सही विकल्प का चयन कीजिए। अभिकथन: कॉन्फ्रें स हॉल की छतें वक्रित बनाई जाती हैं। कारण: वक्रित छतें हॉल में ध्वनि को समान रूप से प्रसारित करने में सहायता करती हैं।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) अभिकथन और कारण दोनों सत्य हैं तथा कारण, अभिकथन की सही व्याख्या है।
द्रव्यमान प्रतिशत = (विलेय का द्रव्यमान / विलयन का कुल द्रव्यमान) x 100 = 25/(25+250) x 100 = 9.09%।
More solved Science questions
- An electric heater of 1500 watt is used for 4 hours every day. How many units (kWh) of electricity will it consume in the month of June?
- A cross between organisms differing in two traits is called a:
- Malaria in humans is most commonly transmitted through the bite of the female mosquito of which genus?
- An electric heater of 1,500 W is used for 4 hours every day. How many units of electricity will it consume in 30 days?
- If the power of a lens is +1 Dioptre, then the focal length of the lens will be:
- A sound wave has a frequency of 1600 Hz. If the wavelength of the wave is 0.2 m, what will be the speed of the wave?