Chapter 6: Problem 9
Which type of area is best suited for chain survey? Give reasons.
Chapter 6: Problem 9
Which type of area is best suited for chain survey? Give reasons.
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Get started for freeConvert the following \(\mathrm{RB}\) to \(\mathrm{WCB}\) (a) \(\mathrm{N} 32^{\circ} 30^{\prime} \mathrm{E}\) (b) \(\mathrm{S} 42^{\circ} 40^{\prime} \mathrm{E}\) (c) \(\mathrm{S} 60^{\circ} 30^{\prime} \mathrm{W}\) (d) \(\mathrm{N} 72^{\circ} 50^{\prime} \mathrm{W}\)
Define surveying. Explain its importance for civil engineers.
Which of the following reductions does not give an amine?
Directions: This section contains 3 paragraphs. Based upon the paragraph, 3 multiple choice questions have to be answered. Each question has 4 choices (a), (b), (c) and (d), out of which ONLY ONE is correct. Passage I Amines have the formula \(\mathrm{RNH}_{2}\) and can be prepared by different methods. Some of them are (i) reduction of nitriles (ii) reduction of amides (iii) reduction of azides and (iv) Gabriel phthalimide synthesis. The most important property of amines is their basicity due to the presence of lone pair of electrons on nitrogen. Answer the following questions. The conversion of \(\mathrm{RCH}_{2} \mathrm{CH}_{2} \mathrm{Br}\) to \(\mathrm{RCH}_{2} \mathrm{CH}_{2} \mathrm{~N}_{3}\) by \(\mathrm{NaN}_{3}\) is an example of (a) \(\mathrm{S}_{\mathrm{N}} 1\) reaction (b) \(\mathrm{S}_{\mathrm{N}} 2\) reaction (c) nucleophilic addition reaction (d) electrophilic addition reaction
Each question in this section has four suggested answers of which ONE OR MORE answers will be correct. The reaction(s) involved in the above conversion of phthalimide to anthranilic acid is/are (a) Reduction with \(\mathrm{NaBH}_{4}\) (b) Alkaline hydrolysis (c) Reaction with \(\mathrm{HNO}_{2}\) (d) Hofmann bromamide reaction
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