(a) Funaria (b) Selaginella (c) Pinus (d) Cycas Ans. a (6)
(a) Unicellular simple rhizoids (b) Tuberculated rhizoids (c) Distinct branched coenocytic rhizoids (d) Multicellular, oblique septate rhizoids Ans. d (7)
(a) Spore sac (b) Protonema (c) Collumela (d) Apophysis Ans. c (7)
(a) Leaf (b) Stem (c) Upper part of capsule (d) Lower part of capsule Ans.d (6)
(a) Total parasite (b) Partial parasite (c) Independent (d) All the above Ans. b (11)
(a) 4 neck canal cells, 1 venter canal cell and one oosphere (b) 4 neck canal cells, 2 venter canal cells one oosphere (c) 4 neck canal cells, one venter canal cell and two oospheres (d) 6 neck canal cells, …
(a) Peristome teeth and seta (b) Shrinkage of annulus and explosion of capsule (c) Death and decay of thallus and external pressure on calyptra (d) Xerochasy of elaters Ans. c (10)
(a) Chemoautotrophs (b) Partial parasite (c) Photosynthetically independent (d) Total parasite Ans. d (11)
(a) Simple sporophytic stage (b) Spores are released by rupture of sporangiam (c) Sporophyte is total parasite (d) Rhizoids are unicellular Ans. b (18)
(a) Unicellular smooth-walled (b) Unicellular tuberculate (c) Both smooth–walled and tuberculate unicellular (d) Multicellular smooth-walled and tuberculate Ans. c (3)
(a) Branched unicellular (b) Branched multicellular (c) Unbranched multicellular (d) Unbranched unicellular Ans. d (8)
(a) Moss (b) Riccia (c) Azolla (d) Fern Ans. b (22)
(a) Spores, elaters and nutritive cells (b) Spores and nutritive cells (c) Elaters and spores (d) Spores only Ans. b (16)
(a) Thallus (b) Capsule (c) Zygote (d) Spore Ans. c (5)
(a) Rounded (b) Cup-shaped (c) Star-shaped (d) Flask–shaped Ans. d (8)
(a) Sporophyte (b) Gametophyte (c) Aquatic (d) Sporophyte Ans. b (8)
(a) Egg (b) Zygote (c) Antherozoids (d) Spore mother cells Ans. d (11)
Two circular discs A and B are of equal masses and thickness but made of metals with densities dA and dB (dA>dB) . If their moments of inertia about an axis passing through centres and normal to the circular faces …
The moment of inertia of a solid sphere of density ρ and radius R about its diameter is (a) (105/176)R5ρ (b) (105/176)R2ρ (c) (176/105)R5ρ (d) (176/105)R2ρ Ans. c (10)
(a) 29√2 days (b) 29 /√2 days (c) 29 × 2 days (d) 29 days Answer: d (4)
(a) 1/3 (b) 1/9 (c) 1/27 (d) 1/4 Answer; b (3)
The maximum and minimum distances of a comet from the sun are 8 × 1012 m and 1.6 × 1012 m . If its velocity when nearest to the sun is 60 m/s, what will be its velocity in m/s …
(a) Sliding of molecular layer is much easier than compression or expansion (b) Reciprocal of bulk modulus of elasticity is called compressibility (c) It is difficult to twist a long rod as compared to small rod (d) Hollow shaft is …
a. Frenkel defect b. Schottky defect c. Metal deficiency defect d. Metal excess defect Ans. d Explanation : In metal excess defect when holes created by missing of anions are occupied by electrons, there sites are called F- centres and …
A flywheel of moment of inertia 0.32 kg–m2 is rotated steadily 120 rad/s at by a 50 w electric motor. The kinetic energy of the flywheel is (a) 4608 J (b) 1152 J (c) 2304J (d) 6912J Ans. …
The angular velocity of a body is →w= 2^j+3^k+4^k and a torque →τ = ^j+2^k+3^k acts on it. The rotational power will be (a) 20 W (b) 15 W (c) √17 W (d) √17 W Ans. a (8)
a. Brass is an interstitial alloy, while steel is a substitutional alloy, while steel is a substitutinal b. Brass is a substitutional alloy, while steel is an interstitital alloy c. Brass and steel are both substitutional alloys d. Brass and …
Ag+ << Br– . The AgBr crystal should have the following characteristics a. Defectless (perfect) crystal b. Schottky defect only c. Frenkel defect only d. Both Schottky and Frenkel defects Ans. d Explanation : In AgBr both Schottky and Frenkel …
a. Softer b. less tensile c. less malleable d. more ductile Ans. b Explanation : On adding non-metal the metal become less tensile (4)
(a) Disc (b) Ring (c) Solid sphere (d) All will make same number of rotations Ans. d (15)
a. Establishing thermal equilibrium b. Having tendency to diffuse c. Contributing to scattering d. Introducing new electronic energy levels Ans. a Explanation : Impurity present in a crystal does not establish thermal equilibrium (17)
(a) 400% (b) 800% (c) 200% (d) 100% Ans. b (13)
a. NaCl b. KCl c. CsCl d. All of these Ans. d Explanation : Schottky defects occurs in highly ionic compounds which have high co-ordination number ex. NcCl, KCl, CsCl. (9)
(a) Length (b) Breadth (c) Shape (d) Volume Answer-c (5)
A wheel is rotating with an angular speed of 20 rad/s . It is stopped to rest by applying a constant torque in 4s . If the moment of inertia of the wheel about its axis is 0.20 kg-m2, then …
A rod of length l and radius r is joined to a rod of length l/2 and radius r/2 of same material. The free end of small rod is fixed to a rigid base and the free end of larger …
a. Frenkel defect b. Metal excess defect c. Metal deficiency generally defect d. Schottky defect Ans. b (9)
(a) √4 : √3 (b)√3: √4 (c) √3:√2 (d) √2:√3 Ans. a (4)
a. Positive ions and negative ions are of different size b. Positive ions and negative ions are of same size c. Positive ions are small and negative ions are big d. Positive ions are big and negative ions are small …