क्लास 12 केमिस्ट्री

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प्रॉपर्टीज किसकी बारेमें बात करते हैं?

टेक्निकल प्रॉपर्टीज
फाइनेंशियल प्रॉपर्टीज
फिजिकल और केमिकल प्रॉपर्टीज (correct)
बायोलॉजिकल प्रॉपर्टीज

प्रॉपर्टीज के कितने प्रकार होते हैं?

पांच
चार
तीन
दो (correct)

किसकी डिटेल्स में जानना चाहिए?

फिजिकल और केमिकल प्रॉपर्टीज की (correct)
बायोलॉजिकल प्रॉपर्टीज की
टेक्निकल प्रॉपर्टीज की
ग्राफिकल प्रॉपर्टीज की

प्रॉपर्टीज किसके इंपॉर्टेंट होते हैं?

इंसेक्टिसाइड के (D) Signup and view all the answers

प्रॉपर्टीज के कितने प्रमुख प्रकार होते हैं?

दो (B) Signup and view all the answers

Explain the positions of the d– and f-block elements in the periodic table and their general characteristics.

The d-block elements are placed in groups 3-12 of the periodic table, while the f-block elements are placed separately at the bottom of the periodic table. The d-block consists of elements in which the d orbitals are progressively filled, while the f-block consists of elements in which the 4f and 5f orbitals are progressively filled. The d– and f–block elements exhibit general horizontal and group trends, and the f-block elements have unique properties compared to other elements. Signup and view all the answers

What are the electronic configurations of the transition (d-block) and the inner transition (f-block) elements?

The electronic configurations of transition (d-block) elements involve the filling of d orbitals, while the inner transition (f-block) elements involve the filling of 4f and 5f orbitals. Signup and view all the answers

Describe the relative stability of various oxidation states in terms of electrode potential values.

The relative stability of various oxidation states can be appreciated in terms of electrode potential values. This involves understanding the tendency of an element to gain or lose electrons and its resulting stability in different oxidation states based on electrode potential values. Signup and view all the answers

Explain the properties and uses of important compounds such as K2Cr2O7 and KMnO4.

Compounds like K2Cr2O7 and KMnO4 have important properties and uses. For example, they are commonly used as oxidizing agents in various chemical reactions and have distinct colors and chemical properties that make them useful in different applications. Signup and view all the answers

Provide a comparative account of the lanthanoids and actinoids with respect to their electronic configurations, oxidation states, and chemical behaviour.

The lanthanoids and actinoids can be compared based on their electronic configurations, oxidation states, and chemical behavior. For example, both series exhibit a gradual filling of f orbitals, and they have distinct oxidation states and chemical behavior that differentiate them from other elements. Signup and view all the answers

क्लास 12 केमिस्ट्री

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