🔬 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

I went 10m to the East from my house, then turned north and walked another 15m, and then I turned west and covered 12m, and then turned south and covered 15m. How far am I from my house?Answer: 2 m What is the SI unit of work or energy?Answer: Joule A police car, with its siren on, is moving towards a stationary listener. How does the stationary listener receive the frequency of the sound emitted by the siren? ItAnswer: Increases One slice of bread with a tablespoon of peanut butter on it contains 20g carbohydrate, 10g protein, andAnswer: 201kcal Which of the following blood groups has anti-A and antiB antibodies in the serum?Answer: O If an electron in the hydrogen atom jumps from second to first orbit, the emitted radiation has a wavelength of?Answer: 4/3RH The unhybridized p orbital in sp2 hybridization isAnswer: Perpendicular to sp2 orbitals In an inflammatory response, bradykinin causes?Answer: Leakage of fluid from blood vessels Which is INCORRECT about the globular proteins?Answer: Abundantly found in hair Plasma membrane is differentially permeable membrane due to the presence of?Answer: Lipids Acetic acid can be prepared by the hydrolysis ofAnswer: Methyl cyanide The neurotransmitter_______ is hydrolysed by monoamine oxidaseAnswer: Serotinin Diffusion of ____________ across the post synaptic membrane causes it to depolarise:Answer: Sodium ions Addition of HBr to isobutylene mainly givesAnswer: Tert-butyl bromide How many grams of CO₂ can be produced by thermally decomposing 10 moles of ZnCO₃(S)?Answer: 440 ___________ is spread through sexual contact.Answer: Gonorrhoea Where are the enzymes required for the replication of HIV virus located?Answer: Inside the capsid In the case of a parallel plate capacitor, when the distance between the two plates is reduced to half and the area of the plate doubled, the capacitanceAnswer: Increases four times For metals, the temperature coefficient of resistance is:Answer: Positive The electrode potential of the standard hydrogen electrode is chosen asAnswer: 0 V If R1 and R2 are respectively the filament resistance of a 100-Watt bulb and 200-Watt bulb designed to operate on the same voltage, then power of:Answer: R1 is two times R2 The reaction of an alcohol with sodium producesAnswer: Alkoxide Which enzyme is secreted in the active form?Answer: Amylase Gamma ray camera can observe radiations from the _________ that are concentrated in the organsAnswer: Radiopharmaceuticals Pyridine belongs to which class of organic compounds?Answer: Heterocyclic Actual yield will reach the ideal (theoretical) value if the % yield of the reaction is,Answer: 100% Malpighian tubules are found in:Answer: Grasshopper The I-V Graph for a non-Ohmic material is alwaysAnswer: Curved Which is true about the cells found in gastric glands lining the stomach wall?Answer: Mucus cells secrete mucin A competitive inhibitor:Answer: Both A and B