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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ८

In water, hydrogen and oxygen are combined in the ratio of _____ by mass. - Science

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प्रश्न

In water, hydrogen and oxygen are combined in the ratio of _____ by mass.

विकल्प

  • 1:8

  • 8:1

  • 2:3

  • 1:3

MCQ
रिक्त स्थान भरें

उत्तर

In water, hydrogen and oxygen are combined in the ratio of 1:8 by mass.

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अध्याय 12: Atomic Structure - Exercises [पृष्ठ १३६]

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सामाचीर कलवी Science [English] Class 8 TN Board
अध्याय 12 Atomic Structure
Exercises | Q I. 3. | पृष्ठ १३६

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Two samples ‘m’ and ‘n’ of slaked lime were obtained from two different reactions. The details about their composition are as follows: 

  • ‘sample m’ mass: 7g
  • Mass of constituent oxygen: 2g
  • Mass of constituent calcium: 5g
  • ‘sample n’ mass: 1.4g
  • Mass of constituent oxygen: 0.4g
  • Mass of constituent calcium: 1.0g

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Ruthresh, Hari, Kanishka, and Thahera collected different samples of water from a well, a pond, a river, and underground water. All these samples were sent to a testing laboratory. The test result showed the ratio of hydrogen to oxygen as 1:8.

  1. What conclusion would you draw from the above experiment?
  2. Which law of chemical combination does it obey?

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