1. A
   crylAc and crylAb
2. B
   crylAc and crylIAb
3. C
   crylIAb and crylAc
4. D
   crylAc and crylIIAb

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1. A
   Pyramid of number in grassland
2. B
   Pyramid of energy in pond ecosystem
3. C
   Pyramid of biomass in grassland
4. D
   Pyramid of biomass in sea

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1. A
   Ova collected from a female donor are transferred to the uterus of an infertile female.
2. B
   Early embryos with up to 8 blastomeres are transferred to the uterus of an infertile female.
3. C
   Early embryos with up to 8 blastomeres are transferred into the fallopian tube of an infertile female.
4. D
   It is the transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce ovum but can provide suitable envoronment for fertilization and development.

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1. A
   A and B only
2. B
   A, B and C only
3. C
   C, D and E only
4. D
   B, C and D only

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1. A
   C, D and E only
2. B
   B, C and E only
3. C
   A, B and D only
4. D
   A, C and E only

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1. A
   A-III, B-I, C-II, D-IV
2. B
   A-I, B-II, C-III, D-IV
3. C
   A-IV, B-III, C-II, D-I
4. D
   A-III, B-II, C-I, D-IV

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1. A
   Ramapithecus $\rightarrow$ Homo habilis $\rightarrow$ Homo erectus $\rightarrow$ Neanderthal $\rightarrow$ Homo sapiens
2. B
   Homo sapiens $\rightarrow$ Ramapithecus $\rightarrow$ Homo habilis $\rightarrow$ Neanderthal $\rightarrow$ Homo erectus
3. C
   Homo habilis $\rightarrow$ Homo erectus $\rightarrow$ Ramapithecus $\rightarrow$ Neanderthal $\rightarrow$ Homo sapiens
4. D
   Neanderthal $\rightarrow$ Ramapithecus $\rightarrow$ Homo habilis $\rightarrow$ Homo erectus $\rightarrow$ Homo sapiens

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1. A
   Struthio
2. B
   Neophron
3. C
   Aptenodytes
4. D
   Psittacula

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1. A
   B and E only
2. B
   A and B only
3. C
   B, D and E only
4. D
   A and D only

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1. A
   $\frac{d^2y}{dx^2} = \frac{\rho g}{S} x$
2. B
   $\frac{d^2y}{dx^2} = \frac{\rho g}{S} y$
3. C
   $\frac{d^2y}{dx^2} = \sqrt{\frac{\rho g}{S}}$
4. D
   $\frac{dy}{dx} = \sqrt{\frac{\rho g}{S}} x$

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1. A
   100
2. B
   125
3. C
   150
4. D
   250

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1. A
   $\vec{E}$ is perpendicular to $\vec{B}$ and its magnitude is $27 \times 10^4$ V m$^{-1}$
2. B
   $\vec{E}$ is perpendicular to $\vec{B}$ and its magnitude is $27 \times 10^2$ V m$^{-1}$
3. C
   $\vec{E}$ is parallel to $\vec{B}$ and its magnitude is $27 \times 10^2$ V m$^{-1}$
4. D
   $\vec{E}$ is parallel to $\vec{B}$ and its magnitude is $27 \times 10^4$ V m$^{-1}$

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1. A
   0.25
2. B
   0.40
3. C
   0.5
4. D
   0.75

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1. A
   $\frac{3}{2}$
2. B
   $\frac{2}{3}$
3. C
   $\frac{1}{3}$
4. D
   $\frac{1}{2}$

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1. A
   2.0 A
2. B
   0.5 A
3. C
   2.5 A
4. D
   1.5 A

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1. A
   $(\sin\theta)^{\frac{1}{2}}$
2. B
   $\left(\frac{1}{2 + 3\sin\theta}\right)^{\frac{1}{2}}$
3. C
   $\left(\frac{\cos\theta}{2 + 3\sin\theta}\right)^{\frac{1}{2}}$
4. D
   $\left(\frac{\sin\theta}{2 + 3\sin\theta}\right)^{\frac{1}{2}}$

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1. A
   AND
2. B
   NAND
3. C
   OR
4. D
   NOR

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1. A
   $B_y = 2 \times 10^{-7}\cos(5x + 1.5 \times 10^9 t)\,T$
2. B
   $B_x = 2 \times 10^{-7}\cos(5x + 1.5 \times 10^9 t)\,T$
3. C
   $B_z = 60\cos(5x + 1.5 \times 10^9 t)\,T$
4. D
   $B_y = 60\sin(5x + 1.5 \times 10^9 t)\,T$

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1. A
   21 NS
2. B
   7 NS
3. C
   0
4. D
   84 NS

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1. A
   5 volt
2. B
   6 volt
3. C
   9 volt
4. D
   10 volt

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1. A
   1 : 4
2. B
   1 : 2
3. C
   2 : 1
4. D
   4 : 1

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1. A
   $4p$ and $4m$
2. B
   $p^4$ and $4m$
3. C
   $4p$ and $m^4$
4. D
   $p^4$ and $m^4$

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1. A
   0.125 kg
2. B
   0.144 kg
3. C
   0.116 kg
4. D
   0.156 kg

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1. A
   $-\frac{2}{(x+2)^3}$
2. B
   $-\frac{2}{(2x+1)^3}$
3. C
   $+\frac{2}{(x+1)^3}$
4. D
   $+\frac{2}{2x+1}$

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1. A
   7.8 A and 30$^\circ$
2. B
   7.8 A and 45$^\circ$
3. C
   15.6 A and 30$^\circ$
4. D
   15.6 A and 45$^\circ$

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