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Hinsberg test is employed to separate primary, secondary and tertiary amines from a mixture. In this test the mixture of amines is treated with benzene sulphon
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Solution:Mass of acetic acid  W1= 75g Molar mass of C6H8O6                = 6×12+8×1+
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The village people - old Hauser, the former Mayor, the former postmaster and several others were present in the school room for thanking their master for his f
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Gross value added = (i) + (iii - ii) - (iv)= 500 + (20 - 30) - 300 = 190Gross value added at FC = 190 + 40 subsidy = 230 thousands.
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The rattrap peddler was a tall man who had his own, imagination and meditation. Instead of flowing some goodness in him, he had the human weakness of petty thi
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Energy stored in a capacitor is given by, When the capacitor is connected in parallel combination, equivalent capacitance = 2C
Here, the total charge Q remain
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Kamala Das’s mother was an old lady of sixty six. Her childhood fear returned on seeing her pale and corpse-like face she feared lest her mother should die b
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GSEBE Textbook Solutions Resource Centre For Class 8 to 12. Download solved CBSE previous year papers, Solved sample papers, Pre-board papers. Students can download NCERT solutions for Class 8 to 12 - Zigya.
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मनुष्य अपनी सांस्कृतिक विरासत से प्राप्त तकनीक और प्रौद्योगिकी की सहायता से अपने भौतिक पर्यावरण से अन्योन्यक्रिया करता है। महत्त्वपूर्ण बात यह नहीं है कि मनुष्य क्या उत्पन्न एवं निर्माण करता है बल्कि यह है कि वह किन उपकरणों एवं तकनीकों की सहायता से उत्पादन एवं निर्माण करता है
प्रौद्योगिकी से किसी समाज के सांस्कृतिक विकास की सूचना मिलती है। मनुष्य प्रकृति के नियमों को बेहतर ढंग से जानने के बाद ही प्रौद्योगिकी का विकास कर पाया है। उदाहरणतया घर्षण और ऊष्मा की संकल्पना ने 'आग के आविष्कार' में हमारी सहायता की ।

सभी विज्ञानों का जन्म प्रकृति से हुआ है। सभी उपकरणों की कार्यविधि और तकनीकों को हमन

BeCl2:Lewis dot structure Cl: Be : Cl. The central atom (Be) has only two bond pairs and no lone pair. Hence shape is linear.BCl3:The central atom (B) has only
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