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Class 11 · Chemistry
→In which situation will conservation of mass be tested correctly?
Class 11 · Chemistry
→A teacher gave (H_2O) and (H_2O_2) as examples. For which law are these good examples?
Class 11 · Chemistry
→If volumes in a gaseous reaction are in ratio 1:1:2 which law does this match?
Class 11 · Chemistry
→In Gay-Lussac's law why should volume comparison be careful if temperature and pressure are not same?
Class 11 · Chemistry
→If a sample is a pure compound how should the ratio of its elements be?
Class 11 · Chemistry
→A student says water from any source has the same composition. This statement is based on which law?
Class 11 · Chemistry
→Nitrogen and oxygen form several oxides. Which law can compare their mass ratios?
Class 11 · Chemistry
→A report says in (CO) and (CO_2) a fixed mass of carbon combines with different masses of oxygen. Which law applies?
Class 11 · Chemistry
→In a mixture salt and sand amounts change in every sample. Which law will not be directly applied to it?
Class 11 · Chemistry
→In two experiments pure (CO_2) samples showed the same carbon and oxygen ratio. Which law is shown?
Class 11 · Chemistry
→A student performed a reaction in an open beaker and found lower mass because gas escaped. What is the correct conclusion?
Class 11 · Chemistry
→If A:B is 2:5 in a pure compound and total mass is 35 grams how much is B?
Class 11 · Chemistry
→If 16 grams reactant gives 10 grams product and 6 grams gas how is conservation of mass shown?
Class 11 · Chemistry
→In a reaction 9 grams and 11 grams reactants combine. If one product is 13 grams what is the other product?
Class 11 · Chemistry
→If gaseous volume ratio 4:8:4 is given what is its simplest form?
Class 11 · Chemistry
→In a gaseous reaction 2 litres gas A and 3 litres gas B form 2 litres gas C. What is the ratio?
Class 11 · Chemistry
→In which case is the law of definite proportions not broken but the material is identified as a mixture?
Class 11 · Chemistry
→If a 9 gram compound contains 3 grams A what is the mass of B?
Class 11 · Chemistry
→If 27 grams water contains 3 grams hydrogen what is the mass of oxygen?
Class 11 · Chemistry
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