🔬 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

If an object is moving with constant speed then its distance time graph will be straight line:Answer: Inclined to time-axis High energy photons emitted due to transition of inner shell electrons in heavy atoms are called:Answer: Characteristics x-rays When metal surface is exposed to light it may emit electrons. The maximum energy of these electrons depends are:Answer: Wavelength of light The operational amplifier can be used as:Answer: All of these Boyle’s law states that for ideal gases pressure is inversely proportional to volume, if the temperature is:Answer: Constant The efficiency of Carnot engine:Answer: Can be 100 % if the cold reservoir is at 0 K. When sunlight passes through a Polaroid, it becomes:Answer: Polarized A train travelling at 9 Km/h sounds a whistle of frequency hz. The frequency of the sound heard by the train’s driver will be:Answer: 1000 Hz A tuning fork P producers 12 beats per second with another tuning fork Q. if the frequency of Q is 200 Hz, the frequency of P is:Answer: 212 Hz The following is an example of longitudinal waves:Answer: Sound emitted by a train In a body exiting simple harmonic motion:Answer: Maximum displacement from the mean position is constant Water runs through a pipe with variable cross sectional area. The pressure in the narrow sections of the pipe is:Answer: Lower than in the wider section The orbital speed of a satellite going round he earth increases if the its distance from the earth is:Answer: Decreases The SI unit of power is Watt. It is defined as:Answer: None of these A collision in which the kinetic energy of he system is NOT conserved is called:Answer: Inelastic collision According to Newton’s first law of motion, the mass of an object is a quantitative measure of itsAnswer: Inertia Which of the following has lightest vapor pressure at 20 degree C?Answer: Glycerol The shape of Py atomic orbital is:Answer: Demb-bell Which of the following is not colligative property :Answer: Freezing point The element with highest ionization energy:Answer: Nitrogen The fertilizer which cannot be used in paddy rice field:Answer: NH₄NO₃ The reagent which can be used to distinguish between ethane and ethene:Answer: Both The alcohol which is a dihydric but not a glycol:Answer: Butane-1,3- diol The oxidation of …………… always gives carboxylic acid:Answer: Aldehydes Alkanes or parafins are made up ofAnswer: Carbon and hydrogen only Phenol can be prepared by:Answer: Both A and C 18 g of glucose is dissolved in 1kg of pure water. The solution will have:Answer: Lower vapour pressure We can completely separate the components of a liquid mixture by frictional:Answer: None The strength of a strong acid depends on:Answer: Its dissociation The equilibrium of a reversible reaction is disturbed byAnswer: Recovering a product of the reaction