46684.Which is the right option for the tallest and the smallest Gymnosperm plant ?
Eucalyptus and Zamia pygmea
Wolffia globosa and Eucalyptus
Sequoia sempervirens and Zamia pygmea
Sequoia sempervirens and Wolffia globosa
46704.In which cities Bharat stage II is applied from 1st april’2005?
Delhi, Mumbai, Chennai, Baroda, Surat
Delhi, Mumbai, Kanpur, Baroda, Surat
Delhi, Mumbai, Chennai, Baroda, Pune
Mumbai,Pune,Bangalore,Surat,Ahmedabad
46706.Which type of damage can be caused by Particulate matter of 2.5 micrometer or less in diameter to human health?
Breathing and respiratory symptoms
Inflammation and damage to lungs
Premature death of an individual
All of these
46728.A useful process for determining whether an individual is homozygous or heterozygous is
cross – breeding
self fertilization
Back – crossing
Test cross
46729.Allele is the
Alternate trait of gene pair
Total number of genes for a trait
Total number of chromosomes
Total number of chromosomes of a haploid set.
46747.The enzyme involved in transcription is
C) DNA polymerase II
C) DNA polymerase II
RNA polymerase
DNA polymerase I
DNA polymerase III
46750.Who supported Grif fith effect by molecular explanation ?
Hershay and chase
Watson, crick Ninenberg
Avery , Mc Carty and Macleod
Griffith and Avery
46757.The difference between Homo sapiens and the Homo erectus was ____. .
Homo sapiens originated in Africa while Homo erectus was in Asia
Homo erectus were much smaller in size than homo sapiens.
Homo erectus stayed in Africa while Homo sapiens did not.
The size of their brain of Homo eructus was smaller to homo sapiens
46762.Heredity or inheritance of specific traits became clearer due to
Lamarck’s theory
Mendel worked on garden peas
Darwinism
Neo-Darwinism
46779.A ray of light falls on a transparent sphere with centre at C as shown in figure given here.
The ray emerges from the sphere parallel to line AB. The refractive index of the sphere is
The ray emerges from the sphere parallel to line AB. The refractive index of the sphere is
3/2
$\sqrt{2}$
1/2
$\sqrt{3}$
46780.The charge on the capacitor of capacitance G shown in the figure below will be
CE
$\dfrac{CER_{1}}{R_{1}+r}$
$\dfrac{CER_{2}}{R_{2}+r}$
$\dfrac{CER_{1}}{R_{2}+r}$
46781.Certain quantity of water cools from 70°C to 60°C in the first 5 min and to 54°C in the next 5
min. The temperature of the surroundings is
min. The temperature of the surroundings is
45°C
20°C
42°C
10°C
46782.Five equal resistances, each of resistance R, are connected as shown in figure below. A
battery of V volt is connected between A and (B) The current flowing in FC will be
battery of V volt is connected between A and (B) The current flowing in FC will be
$\dfrac{3V}{R}$
$\dfrac{V}{2R}$
$\dfrac{V}{R}$
$\dfrac{2V}{R}$
46783.A body floats in water with 40% of its volume outside water. When the same body
floats in an oil, 60% of its volume remains outside oil. The relative density of oil is
floats in an oil, 60% of its volume remains outside oil. The relative density of oil is
0.9
1.0
1.2
1.5
46784.If g is the acceleration due to gravity on the earth s surface, the gain in potential energy of the
body at a height equal to two times the radius R of the earth will be:
body at a height equal to two times the radius R of the earth will be:
mg 2 R
mg 3 R
$\dfrac{1}{3} mg R$
$\dfrac{2}{3} mg R$
46785.The moment of inertia of a uniform horizontal cylinder of mass M about an axis passing
through its edge and perpendicular to the axis of the cylinder when its length is 6 times its
radius R is
through its edge and perpendicular to the axis of the cylinder when its length is 6 times its
radius R is
$\dfrac{36}{4}MR^2$
$\dfrac{36}{4}MR$
$\dfrac{49}{4}MR$
$\dfrac{49}{4}MR^2$
46786.Two soap bubbles of radii x and y coalesce to constitute a bubble of radius z is equal
to
to
$\sqrt{x^2+y^2}$
$\sqrt{x+y}
x +y
$\dfrac{\sqrt{x^2+y^2}}{2}$
46787.A particle of mass m is located in a one dimensional potential field where potential
energy is given by:
V(x) = A(1 – cos px), where A and p are constants. The period of small oscillations of the particle is
energy is given by:
V(x) = A(1 – cos px), where A and p are constants. The period of small oscillations of the particle is
$2\pi\sqrt{\dfrac{m}{Ap}}$
$2\pi\sqrt{\dfrac{m}{Ap^2}}$
$2\pi\sqrt{\dfrac{m}{A}}$
$\dfrac{1}{2\pi}\sqrt{\dfrac{Ap}{m}}$
46788.The period of oscillation of a simple pendulum of length l suspended from the roof of
a vehicle, which moves without friction down an inclined plane of inclination a, is given by
a vehicle, which moves without friction down an inclined plane of inclination a, is given by
$2\pi\sqrt{\dfrac{l}{g\cos\alpha}}$
$2\pi\sqrt{\dfrac{1}{g\sin\alpha}}$
$2\pi\sqrt{\dfrac{1}{8}}$
$2\pi\sqrt{\dfrac{1}{g\tan\alpha}}$