🔬 General Science Solved MCQs with Answers

Practice 4010 approved 🔬 General Science questions with verified answers from the 🌐 Current Affairs & GK subject for Pakistan exams.

4010 solved MCQs

The function of salt bridge in galvanic cell is?Answer: To block flow of ions between tow half In the reaction 6NaOH+3Cl₂→5NaCl+NaClO₃ +H₂O, Chlorine is?Answer: Both Tetrahedral lead added to petrol act as?Answer: Inhibitor The statement regarding effect of catalyst on a reversible reaction is?Answer: To increase the rate constant for both reactions How many isomers are possible for C₂H₂Cl₂?Answer: 3 The common reagent used in oxidation of alcohols is?Answer: K₂CrO₄+H₂SO₄ Complete reduction of acids to alkanes is carried out with?Answer: Both B and C Which of the following oxide is unlikely to be dissolved in sodium hydroxide?Answer: MgO Which statement about oxygen and sulphur is not correct?Answer: Both help in combustion Which of the following is used as dehydrating agent for drying gases?Answer: Sulphuric acid An astronaut in space comes to know of an explosion on a nearby planet. The astronaut came to know about the explosion because:Answer: The astronaut only saw the explosion When you drop a ball it accelerates downward at 9.8 m/s₂ . If you instead throw it downwards then its acceleration immediately after leaving your hand, assuming no air resistance, is:Answer: 9.8 m/s₂ Which one of the following is not a vector quantity?Answer: Kinetic energy An ambulance moves around a large round-about, with its sirens on. For a person standing at the center of the round-about, the frequency of ambulance siren heard will be:Answer: Equal to the actual siren frequency A sphere of mass m and velocity 2v moving in the x direction collides with a sphere of mass 2m and velocity v moving in the y direction. If the collision is perfectly elastic. Which of the following statements is corrects:Answer: Both B and C In an alkaline battery the anode, the cathode and electrolyte are, respectivelyAnswer: Zinc, manganese dioxide, potassium hydroxide When water freezes, is occupies:Answer: 9 % more space At muree hills water will boil at about:Answer: 98°C The noble gas have:Answer: Very low ionization energies The transitions elements:Answer: Show variable oxidation states Potassium permanganate is:Answer: A powerful oxidizing agent The following functional group is present in both aldehydes and ketones:Answer: Carbonyl The following is an alcohol:Answer: CH₃ – CH₂ – OH Alkanes are non-polar or weakly polar compounds that are insoluble in:Answer: Polar solvent Benzene has an extraordinary stable molecule because ofAnswer: Delocalized electron cloud Which of the following is NOT used as fertilizer?Answer: Sodium hydroxide Ethanol can be prepared by fermenting the following in the presence of oxygen:Answer: Glucose The periodic table gives basic framework to study the periodic behavior of the physical and chemical properties of:Answer: Elements only Which amino acids can be synthesized by over body:Answer: Non-essential amino acids Which of the following is natural polymer?Answer: Polysaccharide