Back to Projects
JOIN WHATSAPP GROUP
Free PSC MCQ 4 Lakhs+
Please Write a Review
Current Affairs 2018 to 2022
PYQ 1200 Q/A Part - 1
PYQ 1200 Q/A Part - 2
PYQ 1200 Q/A Part - 3
PYQ 1200 Q/A Part - 4
PYQ 1200 Q/A Part - 5
Kerala PSC General Science Book Study Materials Page 352
Book's First Page(a) formic acid (b) oxallic acid (c) citric acid (d) acetic acid Ans: (b) 220. Itching due to insect bite is caused by- [CDS 2010] (a) Formic acid (b) Acetic acid (c) Lactic acid (d) Maleic acid Ans: (b) 221. Which of the following is chemical formula of urea: (a) NH4Cl (b) NH2CONH4 (c) NH2CONH2 (d) NH3 Ans: (c) 222. In urea, nitrogen is to be found in the form of : (a) nitrate (b) nitrite (c) ammonium (d) amide Ans: (d) 223. The percentage amount of nitrogen present in urea is : (a) 26% (b) 36% (c) 46% (d) 60% Ans: (c) 224. The first synthesis of urea in the laboratory was done by : (a) Williamson (b) Kolbe (c) Wohler (d) Bertholet Ans: (c) 225. A woman intends a chemical wash of her ornaments without any quantity loss, then which of the following chemicals will be suitable for the wash? [NDA 2010] (a) aquaregia (b) conc H2SO4 (c) conc NaOH (d) solution of NaS2O7 Ans: (d) 226. Which of the following is used in Dry Cleaning: (a) benzene (b) nitrobenzene (c) chlorobenzene (d) hydroxic benzene Ans: (a) 227. Which of the following is obtained by the reaction of benzene and chlorine in the presence of a catalyst? [CDS 2002] (a) benzene hexachloride (b) benzyle chloride (c) chloro benzene (d) benzoyl chloride Ans: (c) 228. Trinitro Toluene (TNT) is a / an : (a) pesticide (b) insecticide (c) explosive (d) germicide Ans: (c) 351