Cng Crisis in Pakistan free essay sample

Date: 18. 05. 2013 CHEMISTRY PAPER †II Max. Imprints: 17 9:30 a. m. to 9:50 a. m. (Science Pre-Engineering Pre-Medical Groups) Time: 20 minutes SECTION ‘A’ (MULTIPLE CHOICE QUESTIONS) †(M. C. Qs. ) NOTE: I) This segment comprises of 17 section questions and all are to be replied. Each question conveys one imprint. ii) Do not duplicate down the part inquiries in your answerbook. Compose just the appropriate response in full against the best possible number of the inquiry and its part. ii) The code number of your inquiry paper is to be written in intense letters in the start of the answerscript. 1. Select the most suitable response for each from the given alternatives: I) The nuclear number of a component having a place with bunch VA and third period is: * 7 * 13 * 15 * 23 ii) Elements of gathering IB are called: * Normal components * Rare Earth metals * Coinage metals * Alkali metals iii) Hydride particle and Helium iota have the equivalent: * number of protons * number of electrons * number of neutrons * valency iv) The quantity of neutrons in Protium is: * zero * 1 * 2 * 3 ) The component having the image ‘Ga’ has a place with this family: * Carbon * Nitrogen * Boron * Beryllium vi) On consuming in abundance of Oxygen, Sodium shapes its: * superoxide * peroxide * monoxide * dioxide vii) A blend of Aluminum nitrate and Aluminum powder is called: * Duralumin * Ammonal * Carnallite * Alum viii) Ca2B6O11. We will compose a custom article test on Cng Crisis in Pakistan or on the other hand any comparative subject explicitly for you Don't WasteYour Time Recruit WRITER Just 13.90/page 5H2O is the synthetic recipe of: * Cryolite * Colemanite * Bauxite * Borax ix) The equation of Hypochlorous corrosive is: * HOCl * HClO2 * HClO3 * HClO4 x) The metal particle having the most noteworthy number of unpaired electrons is: * Mn? 2 * Fe? 2 * Co? 2 * Ni? 2 xi) The compound name of snickering gas is: Nitric oxide * Nitrous oxide * Nitrogen trioxide * Nitrogen pentoxide xii) This has the base hydration vitality: * Na+ * K + * Rb+ * Cs+ xiii) Cycloalkanes have the general equation: * C Hn n2 2? * C Hn n2 * C Hn n2 2? * C Hn n2 4? xiv) Glycogen is a: * Monosaccharide * Oligosaccharide * Polysaccharide * Disaccharide xv) This gas was utilized in the First World war: * Phosgene gas * Mustard gas * Coal gas * Ammonia gas xvi) The hybridization in the Carbon iota of Carbonyl gathering is: * sp * sp2 * sp 3 * d sp 2 3 xvii) All honorable gases satisfy the Octet rule aside from: * Kr * Ne * He * Ar