12. Choose the correct statements. i. Exponential growth occurs when resources are abundant ii. Logistic growth results in J-shaped curve iii. Carrying capacity is the maximum limit beyond which no further growth is possible. iv. Logistic growth model is considered more realistic than exponential growth(a) i, iii and iv (c) iii only (b) i, ii and iii (d) i and ivDeselect Answer
13. Ciliated epithelial cells are mainly present ina) Bile duct and bronchioles b) Fallopian tube and pancreatic duct c) Bronchioles and fallopian tube d) Salivary duct and pancreatic ductDeselect Answer
14. In adipocytes, nucleus and cytoplasm are at(a) Terminal (b) Centre (c) Periphery (d) All of aboveDeselect Answer
15. Which of the following are directly involved in systemic circulation?a) Superior vena cava, right ventricle, left ventricle b) Right atrium, pulmonary trunk, left ventricle c) Right ventricle, pulmonary arteries, left atrium d) Left ventricle, aorta, inferior vena cavaDeselect Answer
16. Which of the following is an amino acid derived hormone?(a) Ecdysone(b) Estriol (c) Epinephrine(d) EstradiolDeselect Answer
17. Select the correct pair.a) Corpus luteum – temporary endocrine gland b) Thyroid – thymosins c) Epiphysis cerebri – pituitary gland d) Thymus gland – Collip’s hormoneDeselect Answer
18. Statement I: Interferons are proteins produced by infected cells in response to viral infections Statement II: Interferons are members of large group of proteins called cytokines.a) Both Statement I and Statement II are correct b) Statement I is correct but Statement II is incorrect c) Both Statement I and Statement II are incorrect d) Statement I is incorrect and Statement II are correctDeselect Answer
1. Shedding of leaves, flowers and fruits due to change in hormone balance in plants is:(a) Senescence (b) Abscission (c) Photorespiration (d) RipeningDeselect Answer
3. Read the following five statements and select the option with all correct statements: (I) Mosses and Lichens are the first organisms to colonise bare rock. (II) Selaginella pteridophyte. is a homosporous (III) Coralloid roots in Cycas have VAM. (IV) Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic(V) In gymnosperms, male and female gametophytes are present within sporangia located on the sporophyte(a) (II), (III), and (IV) (b) (I), (IV), and (V) (c) (II), (III), and (V) (d) (I), (III), and (IV)Deselect Answer
20. Select the incorrect pair:(a) Axile placentation – Tomato (b) Jasmine, colocasia – Runner (c) Mango fruit – Mesocarp is edible (d) Scutellum – Shield shape cotyledon in seed of grassDeselect Answer
(a) 2.4 eV(b) 1.5 eV(c) 3.1 eV(d) 4.5 eV
(a) μA>μB (b) μA<μB(c) μA=μB (d) can’t be inferred
(a) I1+I2 (b) (√I1+√I2)2(c) (√I1−√I2)2 (d) 2(I1+I2)
(a) 0.250Nm−1 (b) 0.125Nm−1(c) 0.2Nm−1 (d) 8.0Nm−1
(a) -k/r(b) k/r(c) -k/2r(d) k/2r
(a) 40s (b) 80s (c) 20s (d) 50sDeselect Answer
(a) 0.03 (b) 0.3(c) 0.04 (d) 0.4
1. In maize seed, the layer separating the endosperm from the embryo is rich in
2. The cell wall of Chlamydomonas is made up of:(a) hemicellulose (b) proteins (c) glycoproteins(d) both (b) and (c)
3. The function of the cambium in a plant is:(a) water absorption (b) lateral growth (c) food storage (d) photosynthesis
4. The primary function of the cuticle on the surface of leaves is:(a) exchange of gases (b) protection (c) water retention (d) nutrient absorption
5. Which of the following cell organelle contains hydrolytic enzymes?(a) Ribosome (b) Mesosome (c) Lysosome (d) Microsome
6. Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a) reduction of NADP to NADPH2 on the stroma side of the membrane. b) breakdown of proton gradient. c) breakdown of electron gradient. d) movement of protons across the membrane to the stroma
7. Which of the following is the process of respiration that involves the breakdown of fatty acids to generate ATP?(a) Glycolysis (b) B-oxidation (c) Fermentation (d) Kreb’s cycle
8. What is the role of large bundle sheath cells found around the vascular bundles in C4 plants?a) To protect the vascular tissue from high light intensity. b) To provide the site for photorespiratory pathway. c) To increase the number of chloroplast for the operation of Calvin cycle. d) To enable the plant to tolerate high temperature
9. What is a fat molecule made ofa) One glycerol and one fatty acid molecule b) One glycerol and three fatty acid molecules c) Three glycerol and three fatty acid molecules d) Three glycerol molecules and one fatty acid molecules
10. Phosphoglyceride is made up ofa) A saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached b) Only a saturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached c) Only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached d) A saturated or unsaturated fatty acid esterified to a phosphate group, which is also attached to a glycerol molecule
11. Which fatty acid can detect spoilage of oil(a) Oleic acid (b) Linoleic acid (c) Erucic acid (d) Linolenic acid
12. Given below are two statements. Statement I: A protein can be visualized as a line, with the left end representing the first amino acid (C-terminal) and the right end representing the last amino acid (N-terminal). Statement II: Adult human haemoglobin is composed of four subunits: two alpha (α) subunits and two beta (β) subunits In the light of the above statements, choose the correct answer from the options given below.a) Both statement I and statement II are false b) Statement I is true, but statement II is falsec) Statement I is false, but statement II is true d) Both statement I and statement II are true
13. Which of the following is least likely to be involved in stabilising the three-dimensional folding of most proteins(a) Ester bonds (b) Hydrogen bonds (c) Electrostatic interaction (d) Hydrophobic interaction
14. Which two functional groups are typical of sugars?(a) Carbonyl and phosphate (b) Carbonyl and methyl (c) Hydroxyl and methyl (d) Carbonyl and hydroxyl
15. The chitinous exoskeleton of arthropods is formed by the polymerisation ofa) keratin sulphate and chondroitin sulphate b) D-glucosamine c) N-acetyl glucosamine d) lipoglycans
(a) NAD+(b) ATP(c) Glyceraldehyde 3 phosphate(d) Molecular oxygen
(a) 8.24(b) 10.24(c) 3.76(d) 77
2. A solution contains Pb2+ and Fe2+ ions. To it some quantity of Fe and Pb is added Thena) concentration of Pb2+ ions will remain unaffected b) concentration of Pb2+ ions will increase c) concentration of Fe2+ ions will increase d) concentration of Fe2+ ions will decrease.Deselect Answer
3. On which of the following factors, the rate constant does not depend?(a) Temperature (b) Concentration (c) Presence of catalyst (d) Nature of reactantsDeselect Answer
4. According of Kohlrausch’s law, the limiting value of molar conductivity of an electrolyte A2B isDeselect Answer
(a) (A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)(b) (A)-(iii), (B)-(iv), (C)-(ii), (D)-(i)(c) (A)-(ii), (B)-(i), (C)-(iii), (D)-(iv)(d) (A)-(iv), (B)-(ii), (C)-(iii), (D)-(i)
1. Statement I : Osmium exhibits a maximum oxidation state of +6 Statement II : Osmium is a 4d block element.a) Both Statement I and Statement II are true b) Both Statement I and Statement II are False c) Statement I is true but Statement II are False d) Statement I is False but Statement II are TrueDeselect Answer
2. The correct order of increasing bond length isa) O2 < N2 < Cl2 < F2b) O2 > N2 > Cl2 > F2c) O2 < N2 < Cl2 > F2d) N2 < O2 < F2 < Cl2Deselect Answer
3. Which one is the most Acidic among the following oxide
(a) MgO (b) P4O10(c) Tl2O3(d) SO2
4. Uuu(a) Copernicium (b) Meitnerium (c) Darmstadium(d) RontgeniumDeselect Answer
5. Zero electron gain enthalpy is shown by(a) B, N and O (b) Na, Mg and Al (c) H, He and Ne (d) Be, Mg and PDeselect Answer
6. Which Hybridisation is not match with the following compound?
(a) SF4 – sp3d (b) NH3 – sp3(c) BrF5 – sp3d3(d) SF6 – sp3d2
7. The geometry of XeOF2 is
(a) Octahedral(b) T-shape(c) Square Planar (d) Tetrahedral
8. Magnesium reacts with an elements X to form an ionic compoun(d) If the ground state electronic configuration of X is 1s2 2s2 2p3 , the simplest formula for this compound is
(a) Mg2X3(b) MgX2(c) Mg2X (d) Mg3X2
9. Which of the following ion has the maximum polarizing power ?
(a) Na+(b) Mg2+(c) Ca2+ (d) Al3+
10. Dinitrogen is relatively inactive becausea) It has high Electronegativity b) It has high bond dissociation enthalpy c) High Melting and Boiling point d) Stable electronic configurationDeselect Answer
(a) 0.9555 M and 1.910 M (b) 1.910 M and 0.955 M(c) 1.90 M and 1.090 M (d) 0.477 M and 0.477 M
(a) 2 (b) 1 (c) -1/2(d) 3/2
(a) Zn(s)(b) Cr(s) (c) H2(s)(d) Fe2+ (aq)
1. The suitable indicator for the titration of weak acid and strong base should have a pH range between :
2. An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentane-3-one. The alkene ‘A’ is
In the above reaction compound C isa) CH3–COOH, CH3–NH2and CH3–NCb) CH3–CO–NH2, CH3–NH2and CH3–CNc) CH3–CO–NH2, CH3–NH2and CH3–NCd) CH3–CH2–NH2, CH3–NH2and CH3–NCDeselect Answer
13. Which of the following compound act as a poison in Lindlar catalyst ?(a) Sulphur compound(b) Quinoline (c) Both(d) NoneDeselect Answer
14. IUPAC name of aspirin is :a) 2-Ethanoyloxy benzoic acid b) Acetyl salicylic acid c) Aspirin d) 2-methoxy carboxyl benzoic acidDeselect Answer
15. Which of the following nitrogen containing compound does not give Lassaigne’s test ?(a) Phenyl hydrazine (b) Glycine (c) Urea (d) HydrazineDeselect Answer
16. Choose the correct order of atomic size ?a) Sn > Ce > Lu > Yb b) Lu > Yb > La > Lr c) Ce > Pm > Yb > Lu d) Lu > Yb > Ce > LaDeselect Answer
18. Identify the one which reduced Tollen’s reagent ?(a) Starch (b) Cellulose (c) Maltose(d) SucroseDeselect Answer
19. The correct Lewis acid order for boron halide isa) BF3 >BCl3 > BBr3 > BI3b) BF3 < BCl3 < BBr3 < BI3c) BF3 > BI3 > BBr3 > BCl3d) BF3 >BCl3 > BBr3 > BI3Deselect Answer
20. Catalyst used in contact process is is
(a) Fe2O3(b) V2O5(c) Cr2O3 (d) CrO3
(a) (i) and (ii)(b) (ii) and (iv)(c) All of these(d) None of these
(a) Lubb – Sharp closure of AV valves at the beginning of ventricular systol(b) Dup – Sudden opening of semilunar valves at the beginning of ventricular diastole.(c) Pulsation of the radial artery valves in the blood vessels.(d) Purkinje fibers – Initiation of the heart beat
(a) Complex QRS-One complete Pulse(b) Peak T – Initiation of total cardiac contraction(c) Peak P and Peak R together-Syslolic and diastolic blood pressures(d) Peak P- Initiation of left atrial contraction only
(a) Only (i) and (ii)(b) Only(ii)(c) Only (iii) and (iv)(d) Only (i) and (iv)
(a) that can be tilled in lungs by forceful inspiration.(b) that can be breathed out after forceful expiration.(c) that remains in the lungs after normal expiration.(d) that remains in the lungs after forceful expiration.