AUGUST COMBINED TEST 1 – THEORY ONLY
5 MCQ Tests × 20 Questions
Selected from the uploaded source with emphasis on theory, concepts, definitions, statements, principles and applications rather than calculation-heavy questions.
Test 1 – 20 Questions
Q1. In which one of the following preparations are your likely to come across cell junctions most frequently?
Q2. The function of the gap junction is to :
Q3. The rate law for a reaction, A + B ⟶ C + D is given by the expression k[A]. The rate of reaction will be
Q4. Enzymes having slightly different molecular structure but performing identical activity are ______________ .
Q5. As they release hydrolase that digest old and damaged cells, the term suicide bags is aptly used by cell biologists for
Q6. Assertion: Complex reaction takes place in different steps and the slowest step determines the rate of reaction. Reason: Order and molecularity of a reaction are always equal.
Q7. Which of the following statements is incorrect about the collision theory of chemical reaction?
Q8. Select the incorrect match:
Q9. Lysosomes are ___________ vesicular structures formed by the process of packaging in the ________ .
Q10. Which of the following statements is correct regarding the gravitational force?
Q11. A rigid body is said to be in partial equilibrium, when it is in
Q12. The working of venturimeter is based on:
Q13. The compound whose aqueous solution hai the highest pH is
Q14. For the reaction CH₄(g) + 2O₂(g) ⇌ CO₂(g) + 2H₂O(l), ΔHᵣ = −170.8 kJ mol⁻¹, which statement is NOT true?
Q15. Read the statements regarding frog. Which of the statements is/are correct and incorrect? (i) The medulla oblongata passes out through foramen of Monro and continues into spinal cord. (ii) Vasa efferentia are 10-12 in number that arise from testes. (iii) Ovaries have no functional connection with kidneys. (iv) Frogs are uricotelic.
Q16. At any instant, a rolling body may be considered to be in pure rotation about an axis through the point of contact axis is translating forward with speed ____________.
Q17. Which of the following statements is/are false about columnar epithelium? (i) It is made of tall and slender cells. (ii) Free surface may have microvilli. (iii) They are found in stomach and intestine and help in secretion and absorption. (iv) Ciliated epithelium is mainly present in hollow structures like bronchioles and Fallopian tubes. (v) They have apical nuclei.
Q18. The development of Periplaneta americana is
Q19. For an endothermic reaction, H represents the enthalpy of the reaction in kJ mol I. The minimum amount of activation energy will be:
Q20. If there were a reduction in gravitational effect, which ofthe following forces do you think would change in some respect?
Test 2 – 20 Questions
Q1. 'Omnis cellula-e cellula' i.e., new cells arise from preexisting cells; this statement was given by:
Q2. Which of the following options will be correct for the stage of half completion of the reaction: A ⇌ B?
Q3. The escape velocity from the surface of the earth is (where RE is the radius of the earth) −−−−− − −−− −−−− −−− − −
Q4. Assertion: The force between two finite rigid bodies is not necessarily along the line joining their centre of mass. Reason: Gravitational force between two particles is central.
Q5. Carbohydrates, the most abundant biomolecules on earth, are produced by:
Q6. Rate constant of two reactions are given below Identifying their order of reaction. (i) k = 5.3 x 10-2 L mol-1 s-1 (ii) k = 3.8 x 10-4 s-1
Q7. Which of the following is a transparent tissue?
Q8. In the relation, K p = K c (RT ) the value of Δn is
Q9. Assertion: Molecularity greater than three is not observed. Reason: The overall molecularity of a complex reaction is equal to molecularity of the slowest step.
Q10. Cell organelle responsible for autolysis is
Q11. If Vₑ is the escape velocity and V₀ is the orbital velocity of a satellite for an orbit close to the Earth's surface, then these are related by:
Q12. Centromere is a part of _____________ .
Q13. KMnO4 can be prepared from K2MnO4 as per reaction, 3MnO42- + 2H2O ⇌ 2MnO4- + MnO2 + 4OH-. The reaction can go to completion by removing OH- ions by adding:
Q14. Which of the following pairs constitute a buffer?
Q15. Which of the following biomolecules has phosphodiester bonds?
Q16. The plot of concentration of the reactant versus time for a reaction is a straight line with a negative slope. This reaction follows :
Q17. Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?
Q18. Plasma membrane consist mainly of :
Q19. The supportive skeletal structures in the human external ears and in the nose tip are examples of :
Q20. Which of the following secondary metabolites are used as drugs?
Test 3 – 20 Questions
Q1. Which one of the following is a non-reducing carbohydrate ______________ .
Q2. Assertion: Excretion in cockroach occurs by Malpighian tubules. Reason: Each Malpighian tubule is lined by non-ciliated columnar cells.
Q3. Assertion: For a first order reaction, t1/2 is independent of rate constant. Reason: For a first order reaction, t1/2 ∝ [R]0.
Q4. The chemical reaction, 2O3 ⟶ 3O2 proceeds as O3 ⇌ O2 + [O] (fast) k2 [O] + O3 ⟶ 2O2 (slow) The rate law expression will be
Q5. Which of the following statements is incorrect about the nervous system of earthworm?
Q6. (A) Escape velocity of a satellite is greater than its orbital velocity. (R) Orbit of a satellite is within the gravitational field of planet whereas escaping is beyond the gravitational field of planet.
Q7. The function of glyoxysome is
Q8. Pseudostratified epithelium is found in
Q9. What external changes are visible after the last moult of a cockroach nymph?
Q10. In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as : Assertion: The pH of an aqueous solution of acetic acid remains unchanged on addition of sodium acetate. Reason: The ionization of acetic acid is increased by addition of sodium acetate.
Q11. The rate constant is given by the equation k = P·Ze-Ea/RT. Which factor should register a decrease for the reaction to proceed more rapidly?
Q12. If the earth loses its gravity, then for a body:
Q13. A cell organelle containing hydrolytic enzyme is :
Q14. What is true about ribosomes?
Q15. The rate of reaction depends upon the :
Q16. At 473 K, equilibrium constant, Kc for decomposition of phosphorus pentachloride, PCl5 is 8.3 X 10-3. If decomposition is depicted as : PCl5(g) ⇌ PCl3(g) + Cl2(g) ; ΔrHo = 124.0 kJ mol-1 what would be the effect on reaction if the temperature is increased?
Q17. Which type of tissue is correctly matched with its location?
Q18. In a gravitational field the work done in transporting mass from one point to another:
Q19. Cell wall shows ____________ .
Q20. Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2 v at any instant, then the speed of centre of mass of the system will be ____________ .
Test 4 – 20 Questions
Q1. The correct relationship between free energy change in a reaction and the corresponding equilibrium constant, K is
Q2. Formation of CIF3 from Cl2 and F2 is an exothermic process. The equilibrium system can be represented as Cl2(g) + 3F2(g) ⇌ 2ClF3; ΔH = -329 kJ mol-1 Which of the following will increase quantity of ClF3 in the equilibrium mixture?
Q3. Which of the following is incorrect for Pheretima
Q4. Assertion: Precipitation of silver chloride occurs instantaneously by mixing of aqueous solutions of silver nitrate and sodium chloride. Reason: Ionic reactions occur very fast.
Q5. Bernoulli's principle is not involved in the working or explanation of:
Q6. The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and small bronchi are known as
Q7. Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as _____________ .
Q8. For the reversible reaction: N2 ( g) + 3H2 ( g) ⇌ 2NH 3 ( g) + heat The equilibrium shifts in forward direction:
Q9. Which of the following statements about cell junctions are correct? (i) All the cells of the epithelium are held together with little intercellular materials. (ii) In almost all animal tissues specialised junctions provide both structural and functional link between their
Q10. Black Hole is
Q11. Which of the following N base are pyrimidines?
Q12. If the rate of the reaction is equal to the rate constant, the order of the reaction is
Q13. Assertion: For the reaction CHCl3 + Cl2 ⟶ CCl4 + HCl Rate =k[CHCl3][Cl2]1/2 Reason: Rate of reaction is always equal to the sum of the stoichiometric coefficients of the reacting species in a balanced chemical equation.
Q14. Identify the correct order of solubility in aqueous medium:
Q15. Epithelial tissue with thin flat cells appearing like packed tiles occurs on ______________ .
Q16. Read the following statements about cockroach. (i) In male cockroach, a characteristic mushroom shaped gland is present in the 6th - 7th abdominal segments which functions as an accessory reproductive gland. (ii) Cockroach is uricotelic. (iii) The fat body and uricose glands are glandular in function. (iv) Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again. Which of the above statements are correct?
Q17. Of the following thermometers, the one which can be used for measuring a rapidly changing temperature is a
Q18. The escape velocity from the Earth is 11.2 km/s. If a body is projected in a direction making an angle 45° to the vertical, the escape velocity is:
Q19. One very special feature in the earthworm is that
Q20. The most abundant iipid in the cell membrane is
Test 5 – 20 Questions
Q1. The addition of a catalyst during chemical reaction alters which of the following quantities?
Q2. Moment of the couple is called
Q3. Cell organelles having hydrolases/digestive enzymes are _____________ .
Q4. The temperature dependence of the rate constant k is given by the Arrhenius equation. Activation energy can be calculated by plotting:
Q5. The reaction 2SO2 + O2 ⇌ 2SO3 + Heat, will be favoured by
Q6. Select the correct statement from the ones given below with respect to Periplaneta americana.
Q7. In areas far removed from the tanks, the water does not rise to desired heights. This is because the pressure falls due to:
Q8. Which of the following glucose transporters is insulin-dependent?
Q9. Which of the following is a saturated fatty acid?
Q10. A spherical body is dropped in a viscous liquid of infinite extent. What happens to the net force acting on it?
Q11. Frog's heart when taken out of the body continues to beat for sometime. Select the best option from the following statements. (A) Frog is a poikilotherm. (B) Frog does not have any coronary circulation. (C) Heart is 'myogenic" in nature. (D) Heart is autoexcitable Options:
Q12. Cell recognition and adhesion are facilitated by components of plasma membrane. These components are generally
Q13. Vitamin-K is required for ___________ .
Q14. Golgi complex playa major role in:
Q15. A typical fat molecule is made up of :
Q16. Mineral found in red pigment of vertebrate blood is _____________ .
Q17. In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion: pH of the buffer solution is not affected by dilution. [conjugate acid] Reason: pH = pKa + log [base]
Q18. A vessel of water is placed on the floor of an elevator. How does the pressure at the bottom of the vessel change if the elevator moves up with uniform acceleration a?
Q19. Which one of the following has an open circulatory system?
Q20. Golgi apparatus is absent in _____________ .
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