🔬 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

Which order of reaction obeys the expression t1/2 = 1/ka?Answer: Second The function of the hyaluronidase enzyme is:Answer: Penetration of the sperm into the ovum Which of the following influences the variation of temperature at which boiling of liquid takes place?Answer: Outside pressure Irregular striations and involuntary control are related to?Answer: Cardiac muscle cells When the aqueous solution of NACL is electrolyzedAnswer: H₂ is evolved at cathode The provirus of HIV is structurally and chemically made up of?Answer: ssRNA What is the mathematical statement of the first law of thermodynamics?Answer: ΔE= q -W Enzymes show optimum activity between 37 C to 50 C however works:Answer: It loses activity permanently below 37 C Which of the following is an example of tertiary alkyl halide?Answer: 2-bromo-2-methyl butane ABO blood group is controlled by more than two alleles in a population, this shows that ABO blood group is an example of:Answer: Multiple alleles An increase in the heart rate is termed as:Answer: Tachycardia Which of the following is the isomers of pentane?Answer: n-pentane, 2-methyl butane, 2,2-dimethylpropane The body of which is called metamerically segmented.Answer: Annelids Which of the following is an amino acid?Answer: Aspartic acid Feeding by in or on the other organism (host) belonging to different species is called?Answer: Parasitic nutrition Which organelles contain their own DNA?Answer: All of these The polar part of the soap and detergent dissolves in water molecules due toAnswer: Hydrogen bonding Which of the following elements markedly differ from other member of their respective groups?Answer: Lithium and beryllium The cell wall of a prokaryotic cell is composed of:Answer: Carbohydrates & proteins _____forms almost three-fourths of the body by weight.Answer: Water Out of 36 ATPs how many are produced in the electron transport chain?Answer: 32 What is ΔH equal to according to the first law of thermodynamics?Answer: ΔE - PΔV Which of the following has only one orientation in space in the magnetic field?Answer: s orbital The radius of the first orbit of hydrogen is 0.53 A. Which orbit has a radius of 4.77 A?Answer: Third Which of the following acids can show cris-trans isomerism?Answer: Maleic acid Most of the monosaccharides form a ring structure when in solution for example ribose will form a five cornered ring known as _____________--Answer: Ribofuranose The major enzymes involved in the transfer of the phosphate group from ATP to Glucose are:Answer: Kinase Which of the following is true for a reversible reaction at equilibrium?Answer: The rate of the backward is equal to forward reaction Why do transition elements from the interstitial compoundsAnswer: Holes present in crystal lattice of the transition elements The elimination reaction between alkyl halides and strong base takes place by two mechanisms, E1 and E2. How many steps are involved in each one of these?Answer: E1 elimination is two steps and E2 is one step