MEDIUM
11th Odisha Board
IMPORTANT
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A certain metal forms an oxide containing 60% oxygen. The specific heat of the metal is 0.401. Calculate the valency of the metal.

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Important Questions on Basic Concepts Atoms & Molecules

HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 2
0.1 g of a metal M, when dissolved in dil HCI evolved 124.2 ml of hydrogen at NTP. The specific heat of the metal is 0.214. Calculate the atomic mass of the metal. What are the formulae of the oxide and chloride of the metal ?
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 3
An element forms an oxide containing 47% oxygen. The specific heat of the element is 0.22. Calculate the relative atomic mass of the element.
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 4
0.1082 of metal when treated with an excess of dilute H2SO4 liberated 40.2 ml hydrogen gas at 17°C and 770 mm pressure. Aqueous tension at 17°C is 14.4 mm pressure. The specific heat of the metal is 0.095. Determine the relative atomic mass of the metal.
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 5
The chloride of a metal contains 79.8% of chlorine. The specific heat of the metal is 0.224. Calculate the correct relative atomic mass of the metal.
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 1
One gram mole of oxygen will weigh how many grams?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 2
What unit is used for vapour density ?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 3
Which method is suitable for determining the molecular mass of volatile substances?
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 4
How many molecules are present in one gram molar volume of a gas?