Entrance Preparation Paper | BSc.CSIT
Chemistry Practice Questions | 2072
Tribhuvan University (TU)
Practice Chemistry portion of TU Entrance model questions of 2072.
Chemistry
(25×1 = 25)
- The number of moles present in 90 g of water is
a) 1.0 b) 90.0 c) 5.0 d) 9.0 - 1.0 g of HCl reacts with 1.0 g of CaCO3 , the volume of CO2 produced at NTP would be equal to
a) 1.0 litres b) 0.224 litres c) 2.24 litres d) 22.4 litres - Magnetic quantum number specifies
a) orientation of orbitals b) size of orbitals
c) shape of orbitals d) magnetic properties of orbitals - A cooking gas cylinder can withstand a pressure of 20 atmosphere. At 27 C the pressure of the containing gas is 10 atmosphere. On raising the temperature, the cylinder will burst when the temperature exceeds
a) 273° C b) 327° C c) 300° C d) 127° C - Which of the following methods of expressing concentration is independent of temperature
a) Molality b) Molarity c) Normality d) Grams per litre - An aqueous solution of Na2C03 would be
a) acidic b) basic c) neutral d) either acidic or basic - Which one of the following is not a lewis base?
a) H20 b) NH3 c) OH-1 d) BF3 - In alkaline condition KMn04 reacts as follow
2KMn04 + 2KOH → 2K2 MnO4 + H2O + O, the Eq. wt of KMnO4 is
a) M/1 b) M/2 c) M/5 d) M/6 - The molecular geometry of which compound cannot be predicted by the application of VSEPR theory.
a) CH4 b) PCl5 c) SF6 d) MgCl2 - Which of the following is an amphoteric oxide
a) ZnO b) MgO c) SiO2 d) H2O - Ammonia is manufactured by the use of
a) Down’s Process b) Solroy’s Process c) Haber’s Process d) Ostwald’s Process - Dry ice is
a) ice which is dried by treating with dehydrating agent
b) ice which is super cooled
c) solid CO2
d) ice mixed with some organic solvents - Number of atoms in one molecule of sulfur is
a) 8 b) 4 c) 2 d) 1 - Which of the following noble gas is not present in atmosphere?
a) He b) Ar c) Ne d) Rn - Chalcopyrite is an ore of
a) Fe b) Cu c) Zn d) Hg - The substance used as flux in the extraction of iron from haematite in blast furnace is
a) Calcium phosphate b) Silica c) Limestone d) Calcium silicate - The formula of bleaching powder is
a) Ca(OCl)Cl b) CaSO4.2H2O c) 2CaSO4.H2O d) MgSO4.7H2O - The members of a homologous series have
a) different general formula b) different molecular weight
c) different chemical properties d) different method of preparation - Which of the following reagent cannot be used to distinguish between acetaldehyde and acetone
a) Tollen’s reagent b) Fehling’s solution c) Schiff s reagent d) Br2 in CCl4 - Reduction of nitrobenzene in acidic medium gives
a) aniline b) azoxybenzene c) azobenzene d) hydrazobenzene - When formaldehyde reacts with ammonia, it gives
a) aldehyde ammonia b) formic acid c) urotropine d) methyl amine - Dettol is an example of
a) analgesic drug b) antipyretic drug c) antibiotic drug d) antiseptic drug - BHC is an example of
a) Condensation polymer b) addition polymer c) azo dye d) pesticide - Protein is a compound having
a) ether linkage b) ester linkage c) peptide linkage d) amine linkage - Which one of the following is present as a sugar unit in DNA?
a) glucose b) sucrose c) deoxyribose d) ribose
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