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Mdcat-past-papers - DUHS Quiz

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441. The artificial selection in breeding provides a strong evidence for evolution. What does this term means?



442. Use and disuse of the postulate of organs was given by:



443. Radius of first orbit of hydrogen is 0.53°A. Which orbit has a radius of 4.77°A?



444. What is mass of one proton? correct representation?



445. Which of the following has only one orientation in space and in magnetic field?



446. The Magnetic quantum number of 4f orbital would be



447. CO₂ & SO₂ are two compounds. Which of the following best describes these two compounds?



448. What hybridization is present on carbon atoms in Ethyne (C₂H₂)?



449. Ethene has hybridization of C Atom :



450. Carbon atoms in ethane are hybridized:



451. The dipole moment of CO₂ is zero because it is:



452. The equation of the first law of thermodynamics q = ΔE + W reduces at constant volume to:



453. What is ΔH equal to according to the first law of thermodynamics?



454. The correct equation for the first law of thermodynamics is:



455. Reaction taking place in one step or in several steps have same ΔH. It is the statement of:



456. Which of the following is true for equilibrium reaction at equilibrium?



457. Rate of reaction increases by the addition of a catalyst because:



458. Which of the following reactions has the same value of Kc and Kp?



459. Which of the following required for maximum yield of ammonia through haber's process



460. The solubility product (Ksp) predicts whether:



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