Students can solve NCERT Class 10 Science Chemical Reactions and Equations Multiple Choice Questions with Answers to know their preparation level. 1. 3. The sound of a jet plane. Ans: The capacity to do work is called energy. The amount of excess energy is called free energy. Ans: It states that energy can neither be created nor destroyed, it can only be transformed from one form to another. Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because. The favourable redox reaction is. (a) Automated PCR machines are called thermal cyclers, (b) A thermostable DNA polymerase is required, (c) Millions to billions of desired DNA copies can be produced from microgram quantities of DNA. 15. (b) Because of more efficient polymerase activity. The half-reaction method is particularly useful for reactions in aqueous solution. MCQ Questions for Class 12 Chemistry with Answers were prepared based on the latest exam pattern. Ans: The minimum amount of free energy to start a chemical reaction is called chemical energy. Which of the following cannot function as an oxidising agent? __________are non protein, organic molecules That participate in enzyme-catalyzed reactions. The radioactivity in a heart pacemaker. These questions are aligned with the NEET syllabus and help you better prepare for NEET exam. (b) Denaturation involves heating at 90 to 98°C, (c) Annealing involves the binding of primer between 40 to 60C°C. At what temperature does denaturation of DNA double helix takes place? Sol: (b) Single-stranded DNA oligonucleotide. The product contains more energy than the reactants. (a) 3. The reactions which absorb energy are called endergonic reactions. The equivalent mass of oxidising agent in the following reaction is, 3Br2 + 6CO32- + 3H2O → 5Br– + BrO3– + 6HCO3–. Question 43. The coupling reaction in which synthesis of ATP molecule takes during movement of Fl. The metal ions which are loosely attached with the enzymes are called cofactors. Get access to mcq on Redox Reaction and Method for Balancing Redox Reaction for NEET 2020 with answers. Which of the following is not a conjugating agent? 2. Complete the following reaction equations: (All India 2009) Answer: Reduction reaction. Sol:(c) It is a DNA amplification technique. Which of the following is true for asymmetric PCR? 1. Ans: The metal ions which are loosely attached with the enzymes are called cofactors. Ans: The substrate binds with the enzyme. (b) 2. Ans: The measure of degree of disorganization is called entropy. True/ False (For Punjab University only), Marks are True or False statement. (a) Used for generating double-stranded copies for DNA sequence, (b) Used for generating single-stranded copies for DNA sequence. In coil spring type of clutch the cover is separated by a. Active acetate; Active sulfate; Active Methionine; Active Glucuronate; Active Bicarbonate. 7. The amount of excess energy is called free energy. A solution contains Fe2+, Fe3+ and I– ions. enzyme is destroyed. The pull of a magnet. MCQ on PCR. Save my name, email, and website in this browser for the next time I comment. 16. Coenzymes. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. Flexible power transmitting coupling Ans : B. 20. One mole of N2H4 loses 10 moles of electrons to form a new compound y. 6. Stay tuned with BYJU’S Biology for more MCQs and other Biology related topics. Ans: The coupling reaction in which synthesis of ATP, molecule takes during movement of H+ across an H+ gradient is called chemiosmosis. The reactions which absorb energy are called___________ reactions. Your email address will not be published. 6. This test is Rated positive by 85% students preparing for Class 12.This MCQ test is related to Class 12 syllabus, prepared by Class 12 teachers. 9. (a) Kohler (b) Altman (c) Milstein (d) Kary Mullis. Ans: The amount of reactant substance converted to product substance in a given period of time is called reaction rate. Ans: An enzyme is a biological catalyst that can accelerate a specific chemical reaction by lowering the activation energy but remain unaltered in the process. 8. Denaturation is the process of _________. (d) 6. Which of the following statements is accurate for the PCR – polymerase chain reaction? The stored energy is called potential energy. CLASS CHILOPODA (CENTIPEDES) (ehenos, lip + podus, foot), Phylum Porifera – Characteristics , Types , Functions & Reproduction. The minimum amount of free energy to start a chemical reaction is called______________ energy. The coupling reaction in which synthesis of ATP molecule takes during movement of H. The lowering of the activation of energy of a reaction is called catalysis. Automatic gear changer b. T : Any substance that performs catalysis is called an inhibitor, F: Any substance that performs catalysis is called a catalyst. 11. Ans: The lowering of the activation of energy of a reaction is called catalysis. 1. 4. 10. 9. … (b) 5. Balancing redox reactions can become quite complicated and a systematic approach should be used. (c) 7. 4. Required fields are marked *. This phenomenon is called .induced fit. For the overall balanced reaction, the two half-reactions are combined so that the electrons in the two half-reactions cancel. This solution was treated with iodine at 35oC. 3. The stored energy is called_____________ energy. 2. MCQs on PCR. The coupling reaction in which synthesis of ATP molecule takes during movement of Fl + across an H + gradient is called chemiosmosis. Sol:(d) Kary Mullis. Ans: The reactions in which net release of energy take place is called exergonic reaction. (b) 8. Your email address will not be published. It changes the shape of enzyme.This phenomenon is called __________, the metal ions which are loosely attached with the enzymes are called__________. Q.2- The hydroxylated products of phase-1 are converted to soluble metabolites by coupling with polar agents in phase -2 of detoxification reactions by a process called Conjugation. Reverse transcription PCR uses _________. Which of the following statements are true regarding PCR? Which reaction involves neither oxidation nor reduction? Eo for Fe3+/Fe2+ is 0.77V and Eo for I2/2I– = 0.536V. Ans: The energy – due to motion is called kinetic energy. (c) Detecting the presence of the transgene in an organism. Which of the following is a displacement reaction? 10. (d) 9 (b), 1. solar 2. potential 3. thermodynamics, 4. kilocalorie 5. entropy 6. activation, 7. endergonic 8. rate 9. enzyme, 10. induced fit 11. cofactors 12. Class 10 Science MCQs Chapter 1 Chemical Reactions and Equations. This loss of shape is called denaturation. To the best of my knowledge, only … This reaction is known as coupling reaction. Sol:(c) It is a DNA amplification technique. Answer/ Explanation. Ans: It states that all objects in the universe tend to become more disordered and that the total amount of disorder in the universe is continually increasing. The study of energy is called________________, The commonly used unit for, measuring heat in an animal is the________________, The measure of degree of disorganization is called___________.