9. Human skin colour is an example of(a) Polygene (b) Pleiotropic gene (c) Multiple alleles (d) CodominanceDeselect Answer
10. Pleiotropic effect is found in(a) Human height (b) Phenylketonuria (c) Night blindness (d) HaemophiliaDeselect Answer
11. Mendel’s second law is also known asa) Law of dominance b) Law of segregation c) Law of independent assortment d) None of aboveDeselect Answer
12. Chromosomal theory of inheritance is proposed bya) Sutton and Flemming b) Walter Flemming c) Sutton and Boveri d) T.H MorganDeselect Answer
13. Brood parasitism is observed in(a) Cuckoo (b) Cuscuta (c) Butterfly (d) StarfishDeselect Answer
14. The relation between algae and fungi in lichen is(a) Commensalism (b) Parasitism (c) Competition(d) MutualismDeselect Answer
15. Type of interaction that occur in predation is(a)+,+ (b) +,- (c) -,- (d) +,0Deselect Answer
16. The principle of competitive exclusion was given by(a) Darwin (b) MacArthur (c) Connell (d) GauseDeselect Answer
17. In some shallow South American lake, flamingoes and fishes show which type of interaction(a) Competition(b) Mutualism (c) Predation (d) MutualismDeselect Answer
18. Select the correct statement.a) Predators are conduit for energy flow b) Type of interaction in predation is positive c) Predators do not play a role in prey population d) All of aboveDeselect Answer
19. Male contains half the number of chromosomes present in female in (a) Human beings(b) Honey bee (c) Pigeon (d) MothDeselect Answer
20. The number of chromosomes in a person suffering from Down’s Syndrome is(a) 46 (b) 47 (c) 45 (d) 23Deselect Answer
1. HGP is the sequencing of complete human
2. The full form of RFLP isa) Restriction Fragment Long Polymerase b) Restriction Fragment Length Polymorphism c) Required Fragments Length Polymorphism d) Regular Fragment Length Polymerase.Deselect Answer
3. In C3-plants, the first stable product of photosynthesis during the dark reaction isa) malic acid b) oxaloacetic acid c) 3-phosphoglyceric acid d) PhosphoglyceraldehydeDeselect Answer
4. In C4-plants, Calvin cycle operates ina) stroma of bundle sheath chloroplast b) grana of bundle sheath chloroplasts c) grana of mesophyll chloroplasts d) stroma of mesophyll chloroplastsDeselect Answer
5. During translation, the role of tRNA is to:a) Carry amino acids to the ribosome b) Synthesize mRNA from DNA c) Unwind the DNA double helix d) Join Okazaki fragmentsDeselect Answer
6. In the lac operon, the repressor protein binds to:a) Operator b) Promoter c) Structural genes d) Regulator geneDeselect Answer
7. Which of the following is NOT a feature of the genetic code?a) It is degenerate b) It is unambiguous c) It is universal d) It is double-strandedDeselect Answer
8. In a DNA molecule, the percentage of adenine is 30%. What will be the percentage of guanine? (a) 20% (b) 30% (c) 40%(d) 50%Deselect Answer
9. What is the role of the promoter region in transcription?a) It terminates the transcription process b) It serves as the binding site for RNA polymerase c) It codes for the synthesis of tRNA d) It joins Okazaki fragmentsDeselect Answer
1. Benzene reacts with CH3Cl in the presence of anhydrous AlCl3 to form :
d > f
1. Those units, which can neither be derived from one another, nor can they be further resolved into any other units are called
2. Steradian is an example ofa) fundamental units b) derived unitsc) supplementary unitsd) noneDeselect Answer
3. The dimensional formula of Voltage isa) [ML2 T-3 A-1]b) [ML3 T-2 A-1]c) [ML2 T-1 A-3]d) [ML3 T-2 A-2]Deselect Answer
4. If a body changes its velocity in equal intervals of time, it is said to havea) uniform motionb) uniformly accelerated motionc) uniform velocityd) noneDeselect Answer
5. The slope of the position-time graph of an object in uniform motion givesa) displacementb) distancec) velocity d) speedDeselect Answer
6. The distance covered by a body initially at rest, which accelerates to a speed of 144 kmh-1, in 20s isa) 800 m b) 200 mc) 400 m d) 500 mDeselect Answer
Deselect Answer
8. For a non-uniform circular motion in a circle of radius r, the angular acceleration α isa) a constant b) 0c) always varying d) noneDeselect Answer
9. A transverse wave consists ofa) only crests b) only troughsc) both crests and troughsd) rarefactions and compressionsDeselect Answer
10. De Broglie wavelength of 0.05 eV thermal neutron isa) 1.3Åb) 2Åc) 5.4Åd) 8ÅDeselect Answer
11. The line that draws power supply to your house from street hasa) 220√2V average voltage.b) 220 V average voltage.c) Voltage and current out of phase by π/2.d) Voltage and current possibly differing in phase ϕ such that |ϕ|<π/2.Deselect Answer
12. A passenger in an aeroplane shalla) never see a rainbowb) may see a primary and a secondary rainbow is concentric arcs.c) may see a primary and a secondary rainbow as concentric arcs.d) shall never see a secondary rainbow.Deselect Answer
13. A laser beam is used for locating distant objects becausea) it is monochromaticb) it is not chromaticc) it is not observedd) it has small angular spreadDeselect Answer
14. If a constant force acts on a particle, its acceleration willa) remain constantb) gradually decreasesc) gradually increasesd) be undefinedDeselect Answer
15. The maximum value of photoelectric current is calleda) base currentb) saturation currentc) collector currentd) emitter currentDeselect Answer
16. A moving charge producesa) electric field onlyb) magnetic field onlyc) both of themd) none of them.Deselect Answer
17. Energy is emitted when electron jumps froma) Lower orbit to higher orbitb) Higher orbit to lower orbitc) Ground state to first excited stated) Second excited state to infinityDeselect Answer
18. In a nuclear reaction which of the following is conserved?a) Energy b) Spinc) Charged) All of theseDeselect Answer
19. Balmer series lies in thea) Ultraviolet regionb) Visible regionc) Near IR regiond) Far IR regionDeselect Answer
20. How many spectral lines are observed for Hydrogen atom when electron jump from to in visible range?a) 10b) 3c) 6d) 15Deselect Answer
1. The shape of XeO2F2 molecule is
2. What is the Geometry of SF4 (excluding the lone pair of electrons)a) T shape b) See saw c) Tetrahedral d) Trigonal bipyramidal
1. In which part of the plant cell does photosynthesis primarily occur?
a) Mitochondria b) Nucleusc) Chloroplastd) Ribosome
2. What are the two main products of photosynthesis?a) Oxygen and glucose b) Carbon dioxide and water c) ATP and NADPH d) Starch and cellulose
a) Oxygen’b) Carbon dioxidec) Nitrogend) Hydrogen
a) Rubiscob) PEP Carboxylasec) Pyruvate Kinased) ATPase
1. If 250 ml of 0.25 M NaCl solution is diluted with water to a volume of 500 ml, the new concentration of the solution is