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WorksheetsScience-10 (Chemical Rection)
Total questions: 10
Worksheet time: 6mins
When potassium chlorate is heated in the presence of manganese dioxide it change into potassium chloride and oxygen gas.
2KClO3 → 2KCl + 3O2
What type of reaction is it?
पोटासियम क्लोरेटलाई तताउँदा पोटासियम क्लोराइड र अक्सिजन उत्पादन हुन्छ । यो कुन प्रकारको प्रतिक्रियाको उदाहरण हो ?
Synthesis Reaction
Decomposition Reaction
Displacement Reaction
Acid-Base Reaction
When iron reacts with oxygen, it forms iron oxide. What type of reaction is this?
4Fe + 3O2 → 2Fe2O3
यो प्रतिक्रियाको प्रकार के हो ?
Synthesis rection
Decomposition reaction
Neutralization reaction
Double displacement reaction
When magnesium reacts with hydrochloric acid, it produces magnesium chloride and hydrogen gas. What type of reaction is this?
Mg + 2HCl → MgCl2 + H2
यो प्रतिक्रियाको प्रकार के हो ?
Association
Dissociation
Single Displacement
Double Displacement
In the given reaction MnO2 is use as..........
दिइएको प्रतिक्रियामा म्याङ्गानिज डाइअक्साईड के को उदाहरण हो ?
2H2O2 (MnO2) → 2H2O + O2
Product
Reactant
Negative Catalyst
Positive Catalyst
Who discovered the modern periodic table?
आधुनिक पेरियोडिक तालिका कसले निर्माण गरेका हुन ?
Dmitri Mendeleev
John Dalton
Henry Moseley
Neil Bohr
Which element is more active among them?
तलका मध्ये सबैभन्दा सक्रिय तत्व कुन हो ?
Lithium (Li)
Sodium (Na)
Potassium (K)
Hydrogen (H)
Which gas is collect inside the gas jar?
ग्यासजार भित्र कुन ग्याँस जम्मा हुन्छ ?
Hydrogen
Carbon dioxide
Ammonia
Oxygen
What happens to the reactivity of alkali metals as you move down the group?
अल्काली धातुहरूको प्रतिक्रियाशीलता समूहमा तल जान्दा के हुन्छ ?
It decreases.
It remains the same.
It fluctuates.
It increases
What is the value of X to balance the given chemical equation?"
दिइएको रासायनिक समिकरणलाई सन्तुलित गर्न एक्सको मान कति हुनुपर्दछ ?
4Fe+6H2O →2Fe2(SO4)3 + 6H2O + XSO2
2
3
4
6
Which gas is produced when an acid reacts with a metal?
धातुसँग अम्लको प्रतिक्रिया गर्दा कुन ग्यास उत्पादन हुन्छ ?
Carbon dioxide
Nitrogen
Hydrogen
Oxygen
