SECTION - A
Q1. The following reaction is an example of a4NH3 (g) + 502 (g) ’ 4NO(g) +6H20e)
() displacement reaction (ii)combination reaction
-(iii) redox reaction (iv) neutralization reaction
(ii) (a)Xi)and (iv)
(b) (i) and (iii)
(c) (i) and (ii)
(d) (ii) and (iv)
Q2. Which among the following is(are) double displacement reaction(s)?
() Pb+ CuCl2 ’ PbCl2 + Cu
(ii) Na2 SO4 + BaCI2 ’ BaSO4 + 2NaCI
(ii) C +02 ’ C02
(iv) CH4 + 202 ’ C02 + 2H20
Aa) (i) and (iv)
(b) (i) only
xc) (i) and (i)
(d) (ii) and (iv)
3.Which of the following are not ionic compounds?
() KCI (ii)HCI
fii)CC14 iv)NaCl
>(a) (i) and (ii)
(b) (ü) and (ii)
(c) (ii) and (iv)
x(d) (i)and (ii)
'4. Which of the following is the correct sequence of events of sexual reproduction in aflower?
(a) pollination, fertilisation, seedling, embryo
(b) seedling, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seedling
(d) embryo, seedling, pollination, fertilization
, Vegetative propagation refers to formation of new plants from
a)stem, roots and flowers b)stem, roots and leaves
2c)stenm, flowers and fruits X d)stem, leaves and flowers
e0. Oftspring formed as a result of sexual reproduction exhibit more variations because
(a) sexual reproduction is a lengthy process
(0) genetic material comes from twO parents of the same species
(C) gencetic material comes from two parents of different species
(d) genetic materiai comes from many parents
remainsconstant due to
07. The number of chromosomes in parents and offsprings of a particular species
(a) doubling of chromosomes after zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes after gamete formation
(d) halving of chromosomes after gamete formation
LQ8. A cross between a tallplant (TT) and short pea plant (tt)resulted in progeny that were all tallplants Devau
(a) tallness is the dominant trait
(b) shortness is the dominant trait
(c) tallness is the recessive trait
(d) height of pea plant is not governed by gene T' or t
r 29. The maleness of a child is determined by
(a) the X chromosome in the zygote
(b) the Y chromosome in zygote
(c) the cytoplasm of germ cell which determines the sex
(d) sex is determined by chance
o10. In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, whatwill be the
energy available at the producer level? Grass ’ Grasshopper ’ Frog ’ Snake ’ Hawk
(a) 5 k J (b) 50k J (c) 500 k J (d) 5000 kJ
",QH. Electrical resistivity ofa given metallic wire depends upon
(a) its length (b) its thickness (c) its shape (d) nature of the material
4 0.A current of I A is drawn by a filament of an electric bulb. Number of electrons passingthrough a cross
section of the filament in 16 seconds would be roughly
(a) 1020 (b) 106 (c) 108 (d) 10
O3.A Cylindrical conductor of length Iand uniform area of cross-section Ahas resistance R.Another conductor
oflength 2l and resistance Rof the same material has area of cross section
(a) A/2 (b) 3A/2 (c) 2A (d) 3A
Q14A student carries out an experiment and plots the V-l graph of three samples of nichromewire with
resistances RI , R2 and R3 respectively. Which of the following is true?
R
(ampere)
R
Q1. The following reaction is an example of a4NH3 (g) + 502 (g) ’ 4NO(g) +6H20e)
() displacement reaction (ii)combination reaction
-(iii) redox reaction (iv) neutralization reaction
(ii) (a)Xi)and (iv)
(b) (i) and (iii)
(c) (i) and (ii)
(d) (ii) and (iv)
Q2. Which among the following is(are) double displacement reaction(s)?
() Pb+ CuCl2 ’ PbCl2 + Cu
(ii) Na2 SO4 + BaCI2 ’ BaSO4 + 2NaCI
(ii) C +02 ’ C02
(iv) CH4 + 202 ’ C02 + 2H20
Aa) (i) and (iv)
(b) (i) only
xc) (i) and (i)
(d) (ii) and (iv)
3.Which of the following are not ionic compounds?
() KCI (ii)HCI
fii)CC14 iv)NaCl
>(a) (i) and (ii)
(b) (ü) and (ii)
(c) (ii) and (iv)
x(d) (i)and (ii)
'4. Which of the following is the correct sequence of events of sexual reproduction in aflower?
(a) pollination, fertilisation, seedling, embryo
(b) seedling, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seedling
(d) embryo, seedling, pollination, fertilization
, Vegetative propagation refers to formation of new plants from
a)stem, roots and flowers b)stem, roots and leaves
2c)stenm, flowers and fruits X d)stem, leaves and flowers
e0. Oftspring formed as a result of sexual reproduction exhibit more variations because
(a) sexual reproduction is a lengthy process
(0) genetic material comes from twO parents of the same species
(C) gencetic material comes from two parents of different species
(d) genetic materiai comes from many parents
remainsconstant due to
07. The number of chromosomes in parents and offsprings of a particular species
(a) doubling of chromosomes after zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes after gamete formation
(d) halving of chromosomes after gamete formation
LQ8. A cross between a tallplant (TT) and short pea plant (tt)resulted in progeny that were all tallplants Devau
(a) tallness is the dominant trait
(b) shortness is the dominant trait
(c) tallness is the recessive trait
(d) height of pea plant is not governed by gene T' or t
r 29. The maleness of a child is determined by
(a) the X chromosome in the zygote
(b) the Y chromosome in zygote
(c) the cytoplasm of germ cell which determines the sex
(d) sex is determined by chance
o10. In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, whatwill be the
energy available at the producer level? Grass ’ Grasshopper ’ Frog ’ Snake ’ Hawk
(a) 5 k J (b) 50k J (c) 500 k J (d) 5000 kJ
",QH. Electrical resistivity ofa given metallic wire depends upon
(a) its length (b) its thickness (c) its shape (d) nature of the material
4 0.A current of I A is drawn by a filament of an electric bulb. Number of electrons passingthrough a cross
section of the filament in 16 seconds would be roughly
(a) 1020 (b) 106 (c) 108 (d) 10
O3.A Cylindrical conductor of length Iand uniform area of cross-section Ahas resistance R.Another conductor
oflength 2l and resistance Rof the same material has area of cross section
(a) A/2 (b) 3A/2 (c) 2A (d) 3A
Q14A student carries out an experiment and plots the V-l graph of three samples of nichromewire with
resistances RI , R2 and R3 respectively. Which of the following is true?
R
(ampere)
R
