SPSC – Sindh Public Service Commission 2021 Past Paper with Answers

Practice the SPSC – Sindh Public Service Commission 2021 past paper with 423 solved MCQs, answers and topic coverage.

423 solved MCQs across 8 approved papers

SPSC - ASI Past Paper 2021 (Morning)SPSC - ASI · 2021 SPSC - Combined Competitive Examination Past Paper 08-08-2021SPSC - Combined Competitive Examination · 2021 SPSC - Lecturer Botany Past Paper 2021 (Evening)SPSC - Lecturer Botany · 2021 SPSC - Lecturer Botany Past Paper 2021 (Morning)SPSC - Lecturer Botany · 2021 SPSC - Lecturer Chemistry Past Paper 2021 (Evening)SPSC - Lecturer Chemistry · 2021 SPSC - Lecturer Chemistry Past Paper 2021 (Morning)SPSC - Lecturer Chemistry · 2021 SPSC - Lecturer Physics Past Paper 2021 (Evening)SPSC - Lecturer Physics · 2021 SPSC - Lecturer Physics Past Paper 2021 (Morning)SPSC - Lecturer Physics · 2021

The most suitable temperature for the moderate drying of the solid substance is ______?Answer: None of these A single solution of a complex containing equal amounts of two optical isomers is called a _____ mixture.Answer: Racemic The octahedral complex having sp³d² hybridization called as _______ orbital complex.Answer: Outer The wavelength of the radio waves having 90 MHz frequency is?Answer: 3.33 m The maximum number of electrons in sub energy level I = 3 are _____?Answer: 14 The F-F bond energy is less than Cl-Cl bond energy because of ______?Answer: Small size and high electron repulsion The carbon atoms in ethyne C₂ H₂ are said to be _______?Answer: sp-hybridzed The noble gases so unreactive because of ______?Answer: Complete octet Which of the following regions of the spectrum would be used to determine the structure of crystalline solids?Answer: X-rays Which compounds are isomers?Answer: CH₂CH₂CHO and CH₃COCH₃ Which process converts an atom from one element to another, when the nucleus of an atom is bombarded with high energy particles?Answer: Artificial transmutation Which metal can replace Cr in the formula of Cr₂O₃?Answer: Aluminum Which substance can act as Arrhenius base in an aqueous solution?Answer: LiOH A racemic mixture is a equimolar mixture of ______?Answer: Enantiomers pH of the solution after dissolving little amount of sodium occtate is ______?Answer: 8.0 Which one of the following detector is not suitable to use with gas chromatography?Answer: AAS Which one of the following has greatest energy?Answer: A photon of violet light Who was dismissed by the Quaid-e-Azam on 26th April, 1948 in Sindh?Answer: M.A Khuhro If 200 ml of a gas at constant pressure is heated from 0°C to to 100°C, the volume is corrected by multiplying by ______?Answer: 373/273 If 200 ml of a gas at constant pressure is heated from 0°C to to 100°C, the volume is corrected by multiplying by ______?Answer: 373/273 Formic acid and acetic acid are distinguished from each other by reaction with ______?Answer: HgCl₂ The general pre-requisite condition for the stable existence of 2n interface between phases is that ______?Answer: Free energy of formation be negative How much energy is required to boil a kettle of water containing 1 litre at 15°C (Specific heat capacity of water = 4.18?Answer: 355 kJ If the wave length of photon is doubled _____?Answer: Energy is reduced by the factor of two In the complete cell diagram the two half cells are separated by double vertical line which represents?Answer: Salt bridge A wavelength of 245 nm occurs in which proton of the electromagnetic spectrum?Answer: Ultraviolet Ethyne can be prepared using 1, 2-dibromoethane as starting material. What else is used in preparation?Answer: Alcoholic KOH Mohammad Bin Qasim was tortured to death in a prison in Iraq during the reign of _____?Answer: Waleed In chromotherapy the mobile phase is called _____?Answer: Eluate The kinetic energy of an electron ejected from a metal surface exposed to monochromatic radiation depends on the at _____?Answer: Frequency of the light used