Solid generally have higher density than liquid. But in the case of ice and water, ice which is solid, floats on water, a liquid. Which one of the following is the correct reason for the same?
A)
Molecules of water in ice have large empty space as compare to empty space between molecules of liquid water.
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B)
Molecules of water in ice have less empty space as compare to empty space between molecules of water.
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C)
Because ice has heavier mass than the water.
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D)
All of these
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E)
None of these
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A body entirely made up of electrons weighs 60 kg. Calculate the number of electrons in the body.
A)
\[9.11\times {{10}^{28}}\text{ }electron\]
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B)
\[9.11\times {{10}^{31}}electron\]
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C)
\[6.0\times {{10}^{31}}\text{ }electron\]
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D)
\[6.0\times {{10}^{28}}\text{ }electron\]
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E)
None of these
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According to Bohr's model of atom, an electron gains energy from outside when it jumps from an orbit of lower energy \[({{E}_{1}})\] to an orbit of higher energy\[({{E}_{2}})\]. Which one of the following equation is correct for the calculation of change in energy \[(\Delta \,E)\] when an electron jumps from orbital shell 1 to orbital shell 2?
A)
\[\Delta \,E={{E}_{2}}-{{E}_{1}}=hv-hu\]
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B)
\[\Delta \,E=hv-hu={{E}_{2}}-{{E}_{1}}\]
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C)
\[\Delta \,E={{E}_{2}}-{{E}_{1}}=hv\]
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D)
All of these
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E)
None of these
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Which one of the following elements has the given electronic configuration?
A)
Calcium
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B)
Cobalt
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C)
Potassium
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D)
Argon
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E)
None of these
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Volume of a packet of 500 g is \[350\,c{{m}^{3}}\]what will be the mass of the water displaced by this packet? (Density of water is\[1\,g/c{{m}^{3}}\])
A)
350 g
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B)
440 g
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C)
670g
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D)
500 g
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E)
None of these
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A car accelerates uniformly from \[5\,m{{s}^{-1}}\] to \[20\,m{{s}^{-1}}\] in 15 s. Calculate the acceleration.
A)
\[1\,m{{s}^{-2}}\]
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B)
\[10\,m{{s}^{-2}}\]
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C)
\[2\,m{{s}^{-2}}\]
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D)
\[5\,m{{s}^{-2}}\]
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E)
None of these
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Name the element from the following whose nucleus does not contain neutron.
A)
Oxygen
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B)
Nitrogen
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C)
Hydrogen
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D)
Sulphur
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E)
None of these
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Copper consists of two isotopes \[{}^{63}Cu\](relative abundance 69 %) and \[{}^{65}Cu\](relative abundance 31%). Calculate the relative atomic mass of copper.
A)
63.62
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B)
87.30
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C)
45.23
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D)
56.20
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E)
None of these
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Which one of the following is a type of white blood cell produced in the bone marrow?
A)
Basophils
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B)
Neutrophils
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C)
Acidophils
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D)
All of these
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E)
None of these
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Consider the following statements: Statement 1: Krypton is an inert gas. Statement 2: Krypton is chemically unreactive gas. Which one of the following is correct about the above statements?
A)
Statement 1 is true and 2 is false
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B)
Statement 1 is false and 2 is true
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C)
Both statements are true
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D)
Both statements are false
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E)
None of these
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Match the following:
1.
Glucose
(A)
\[N{{H}_{4}}Cl\]
2.
Sugar
(B)
\[Si{{O}_{2}}\]
3.
Sand
(C)
\[{{C}_{12}}{{H}_{22}}{{O}_{11}}\]
4.
Ammonium chloride
(D)
\[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]
A)
1 - D, 2 - C, 3 - B, 4 - A
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B)
1 - D, 2 - B, 3 - A, 4 - C
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C)
1 - A, 2 - C, 3 - B, 4 - D
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D)
1 - D, 2 - A, 3 - B, 4 - C
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E)
None of these
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A signal from space ship has reached the ground station in five minutes. Calculate the distance of the spaceship from the ground station, if the signal travels at the speed of light i.e.\[3\times {{10}^{8}}m/s\]?
A)
\[9\times {{10}^{10}}m\]
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B)
\[7\times {{10}^{9}}m\]
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C)
\[5\times {{10}^{8}}m\]
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D)
\[10\times {{10}^{8}}\]
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E)
None of these
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Which one of the following helps to keep the cell clean by digesting any foreign material?
A)
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B)
done
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C)
done
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D)
done
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E)
None of these
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Which one of the following substances is the best conductor of heat?
A)
Cadmium
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B)
Lead
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C)
Silver
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D)
Mercury
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E)
None of these
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Which one of the following vaccine is administrated to the children, below the age of 1 year from birth, for the protection from whooping cough and Tetanus?
A)
MMR
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B)
DPT - 3
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C)
TT
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D)
DPT-Booster
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E)
None of these
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Which one of the following tissues gives mechanical support to young dicotyledonous stem?
A)
Parenchyma
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B)
Collenchyma
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C)
Sclerenchyma
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D)
Chlorenchyma
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E)
None of these
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Calculate the speed in km/s of an artificial satellite, which is constantly moving in a circular orbit of radius 42250 km and takes 24 hours to revolve around the earth.
A)
4.90 km/s
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B)
3.07 km/s
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C)
5.10 km/s
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D)
13.50 km/s
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E)
None of these
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Which one of the following forces are acting on a toy car lying on a rough surface when you push it?
A)
Frictional force
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B)
Gravitational force
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C)
Muscular force
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D)
all of these
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E)
None of these
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Sam: Ultrasonic sound is emitted by a bat and it is reflected back by an obstacle. Cody: Bats search out prey and fly in dark night by emitting and detecting reflections of infrared waves. Who is correct?
A)
Sam
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B)
Cody
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C)
Both are correct
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D)
both are incorrect
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E)
None of these
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A stone is thrown in a vertically upward direction with a velocity of\[5\text{ }m/s\]. If the acceleration of the stone during its motion is \[10m/{{s}^{2}}\] in the downward direction, what will be the height attained by the stone?
A)
45.50 m
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B)
3.45 m
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C)
1.25 m
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D)
0.45 m
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E)
None of these
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Match the following:
1.
Bryophyta
(A)
Ipomoea
2.
Gymnosperms
(B)
Marchantia
3.
Angiosperms
(C)
Chara
4.
Thallophyta
(D)
Cycas
A)
1 - B, 2 - D, 3 - A, 4 - C
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B)
1 - C, 2 - A, 3 - D, 4 - B
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C)
1 - C, 2 - D, 3 - A, 4 - B
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D)
1 - A, 2 - D, 3 - C, 4 - B
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E)
None of these
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Which one of the following is the connective tissue in human body?
A)
Blood and Lymph
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B)
Bone
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C)
Tendons & ligaments
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D)
All of these
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E)
None of these
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What is the acceleration of a train that starts from railway station and attains speed of \[30\text{ }m/s\] in 2 minutes?
A)
\[0.25\,m{{s}^{-2}}\]
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B)
\[0.5\,m{{s}^{-2}}\]
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C)
\[0.67\,m{{s}^{-2}}\]
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D)
\[0.0067\,m{{s}^{-2}}\]
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E)
None of these
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Calculate gravitational force between the earth and the moon. The mass of the earth is \[6\times {{10}^{24}}kg\]and that of the moon is \[7.4\times \text{1}{{0}^{22}}\,kg\]and distance between them is \[3.84\times {{10}^{5}}\]km.
A)
\[5.02\times {{10}^{50}}N\]
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B)
\[5.02\times {{10}^{10}}N\]
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C)
\[2.02\times {{10}^{10}}N\]
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D)
\[2.02\times {{10}^{20}}N\]
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E)
None of these
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Which one of the following types of matter fills the container completely?
A)
Liquid
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B)
Solid
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C)
Gas
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D)
All of these
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E)
None of these
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Match the following:
1.
Mollusca
(a)
Unio
2.
Protochordata
(b)
Leech
3.
Annelida
(c)
Aranea
4.
Arthropoda
(d)
Balanoglossus
A)
1 - A, 2 - D, 3 - B, 4 - C
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B)
1 - A, 2 - B, 3 - D, 4 - C
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C)
1 - D, 2 - A, 3 - B, 4 - C
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D)
1 - C, 2 - A, 3 - B, 4 - D
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E)
None of these
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Which one of the following types of epithelium tissues forms the linking of kidney tubules and ducts of salivary glands?
A)
Columnar
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B)
Cuboidal
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C)
Squamous
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D)
Stratified squamous
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E)
None of these
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What is the atomic mass of \[HN{{O}_{3}}\]if the atomic mass of H is 1u, N is 14 u and O is 16 u?
A)
66 u
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B)
63 u
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C)
50 u
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D)
70 u
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E)
None of these
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Genes are self-replicated units and are located in the:
A)
Chromosomes
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B)
Plasma membrane
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C)
Nuclear membrane
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D)
Nucleus
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E)
None of these
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A wooden block of mass 2 kg is kept on a table as shown below. Find the pressure exerted by the wooden block on the top of the table.
A)
\[326.18\text{ }N/{{m}^{2}}\]
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B)
\[333.33\text{ }N/{{m}^{2}}\]
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C)
\[340.50\text{ }N/{{m}^{2}}\]
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D)
\[350.50\text{ }N/{{m}^{2}}\]
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E)
None of these
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What is the recoil velocity of a pistol, if a bullet of the mass of 20 g is fired horizontally with a \[150\text{ }m{{s}^{-1}}\]from that pistol, and the mass of the pistol is 2 kg?
A)
\[-1.5\,m{{s}^{-1}}\]
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B)
\[1.0\,m{{s}^{-1}}\]
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C)
\[3\,m{{s}^{-1}}\]
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D)
\[1.5\,m{{s}^{-1}}\]
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E)
None of these
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A man standing between two walls hears two successive echoes at 2s and 3s. Calculate the distance between the walls, (speed of sound in air\[=340m/s\])
A)
510 m
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B)
340 m
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C)
490 m
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D)
850 m
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E)
None of these
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Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h.
A)
\[568970.7\text{ }J\]
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B)
\[-\,208333.3\text{ }J\]
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C)
\[-\,433267746.9\text{ }J\]
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D)
\[56442.9\text{ }J\]
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E)
None of these
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Match the following:
1.
Fungi
(A)
Malaria
2.
Protozoan
(B)
Anthrax
3.
Viruses
(C)
Skin infection
4.
Bacteria
(D)
Dengue fever
A)
1 - D, 2 - A, 3 - C, 4 - B
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B)
1 - C, 2 - B, 3 - D, 4 - A
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C)
1 - A, 2 - D, 3 - C, 4 - B
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D)
1 - A, 2 - A, 3 - D, 4 - B
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E)
None of these
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Which one of the following is the correct electronic configuration of the xenon gas?
A)
2, 8, 18, 10, 8, 8
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B)
2, 8, 2, 8, 18, 8, 8
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C)
2, 8, 18, 18, 8
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D)
2, 8, 18, 8, 18
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E)
None of these
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The potential energy of an object with a mass of 12 kg is 480 J, at a certain height above the ground. Find the height of the object with respect to the ground.
A)
8 m
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B)
7 m
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C)
6 m
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D)
4 m
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E)
None of these
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Which one of the following plant tissues does not possess living protoplasm at maturity?
A)
Collenchyma
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B)
Sclerenchyma
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C)
Epidermis
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D)
Tracheids
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E)
None of these
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Select the accepted value of universal gravitation constant.
A)
\[6.68\times {{10}^{10}}Nm\,\,k{{g}^{-2}}\]
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B)
\[6.68\times {{10}^{11}}N{{m}^{2}}\,k{{g}^{-2}}\]
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C)
\[6.673\times {{10}^{-10}}Nm\,\,k{{g}^{-2}}\]
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D)
\[6.673\times {{10}^{-11}}N{{m}^{2}}\,k{{g}^{-2}}\]
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E)
None of these
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A force of 10 N acts on a body towards east. The work done by the force while the body moves through 1 m is:
A)
5 J
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B)
10 J
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C)
8.6 J
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D)
9.2 J
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E)
None of these
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Jack: Macronutrients concentration is more than 1mg/g dry matter of plant. Jill: Macronutrients in plant is used in building up of plant body and various protoplasmic constituents. Who is correct?
A)
Jack
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B)
Jill
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C)
Both are correct
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D)
both are incorrect
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E)
None of these
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