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धातूनाम् अव्ययानां च विशिष्टविभक्तेः उपयोगं कृत्वा वाक्यनिर्माण कुरुत।
विना
Concept: वाक्यरचना
धातूनाम् अव्ययानां च विशिष्टविभक्तेः उपयोगं कृत्वा वाक्यनिर्माणं कुरुत।
अधः
Concept: वाक्यरचना
5-7 वाक्यात्मकं निबन्धं लिखत।
मम प्रियं पुस्तकम्।
Concept: निबन्धलेखनम्
5-7 वाक्यात्मकं निबन्धं लिखत।
मम प्रिया भाषा।
Concept: निबन्धलेखनम्
सूचनानुसारं कृती: कुरुत।
मृगः प्रत्यहं तत्र गत्वा सस्यम् अखादत्। (त्वान्त-अव्ययं निष्कासयत।)
Concept: व्याकरणवीथि [दशमी कक्षा]
सङ्ख्याः अक्षरैः लिखत।
१६
Concept: व्याकरणवीथि [दशमी कक्षा]
Solve the problem.
If the mass of a planet is eight times the mass of the Earth and its radius is twice the radius of the Earth, what will be the escape velocity for that planet?
Concept: Free Fall
Alkaline earth metals have valency 2. This means that their position in the modern periodic table is in ______.
Concept: Classification of Elements
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
Concept: Periodic Properties >> Atomic Size
Write scientific reason.
Elements belonging to the same group have the same valency.
Concept: Periodic Trends in the Modern Periodic Table
An element has its electron configuration as 2, 8, 2. Now answer the following question.
What is the atomic number of this element?
Concept: The Modern Periodic Table >> Modern Periodic Table and Electronic Configuration of Elements
An element has its electron configuration as 2, 8, 2. Now answer the following question.
What is the group of this element?
Concept: The Modern Periodic Table >> Modern Periodic Table and Electronic Configuration of Elements
An element has its electron configuration as 2, 8, 2. Now answer the following question.
To which period does this element belong?
Concept: The Modern Periodic Table >> Modern Periodic Table and Electronic Configuration of Elements
Define ‘redox reaction’. Give one example.
Concept: Chemical Properties of Carbon Compounds > Oxidation
Define corrosion.
Concept: Chemical Properties of Carbon Compounds > Oxidation
- Complete the given chemical reaction:
\[\ce{CuSO4_{(aq)} + Fe_{(s)} ->}\] _______ + _______ - Name the type of the reaction.
Concept: Types of Chemical Reactions > Single Displacement Reaction
