A pendulum makes 100 oscillations in 5 seconds. What is the frequency of the pendulum?
A)
10 Hz
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B)
20 Hz
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C)
30 Hz
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D)
40 Hz
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E)
None of these
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Which one of the following metals has the lowest position in the reactivity series?
A)
Ca
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B)
Au
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C)
Hg
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D)
Fe
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E)
None of these
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If the amplitude of vibrations is doubled, the loudness of sound produced by the vibratin g objects become:
A)
Twice
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B)
Halved
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C)
Four-times
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D)
Eight times
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E)
None of these
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The fractional force present when one object slides over the surface of another object is known as:
A)
Static friction
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B)
Sliding friction
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C)
Rolling friction
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D)
All of these
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E)
None of these
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Find the pressure applied by the force of 1200 N on an object of area \[5{{m}^{2}}\].
A)
200 pascal
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B)
240 pascal
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C)
260 pascal
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D)
280 pascal
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E)
None of these
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As we go up in the atmosphere from the surface of the earth, the atmospheric pressure goes on:
A)
Increasing
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B)
Decreasing
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C)
Same
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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 is the correct sequence for metamorphosis in silk moth?
A)
Egg\[\to \]Pupa\[\to \]Caterpillar\[\to \]Silk moth
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B)
Egg\[\to \]Silk moth\[\to \]Pupa\[\to \]Caterpillar
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C)
Egg\[\to \]Caterpillar\[\to \]Silk moth\[\to \]Pupa
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D)
Egg\[\to \]Caterpillar\[\to \]Pupa\[\to \]Silk moth
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E)
None of these
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In which one of the following zones of a flame complete combustion of the fuel takes place?
A)
Innermost zone
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B)
Middle zone
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C)
Outermost zone
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D)
All of these
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E)
None of these
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In an experiment, 5 kg of wood was completely burnt. The heat produced was measured to be 85000 kJ. Find the calorific value of the wood.
A)
5000 kJ/kg
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B)
13000 kJ/kg
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C)
17000 kJ/kg
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D)
20000 kJ/kg
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E)
None of these
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According to WCU, which one of the following animals is consiered as the endangered species?
A)
Golden cat
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B)
Chinkara deer
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C)
Indain rhinoceros
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D)
All of these
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E)
None of these
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When copper sulphate reacts with zinc, which one of the following metals is separated out?
A)
Copper
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B)
Zinc
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C)
Iron
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D)
Aluminium
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E)
None of these
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When you place a paper cup containing water over a flame, the water will become hot but the cup will not burn. It happens:
A)
Because water does not take away heat from the flame and does not allow it to reach its ignition temperature.
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B)
Because water takes away heat from the cup and does not allow it to reach its ignition temperature.
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C)
Because water takes away heat from the cup and it allows to reach its ignition temperature.
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D)
All of these
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E)
None of these
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The elements whose properties are intermediate between those of metals and non-metals are known as:
A)
Alloys
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B)
Metalloids
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C)
Metals
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D)
Non-metals
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E)
None of these
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Bharatpur bird sanctuary is situated in which one of the following states of India?
A)
Madhya Pradesh
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B)
West Bengal
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C)
Andhra Pradesh
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D)
Rajasthan
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E)
None of these
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An unborn baby in the uterus at the stage when all the body parts can be identified is called
A)
Zygote
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B)
Embryo
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C)
Foetus
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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 planets traps so much heat that its average temperature remains \[450{}^\circ C\]
A)
Jupiter
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B)
Venus
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C)
Mars
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D)
Saturn
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E)
None of these
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An incident ray makes an angle of \[70{}^\circ \] with normal in a plane mirror. Find the angle of reflection.
A)
\[35{}^\circ \]
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B)
\[70{}^\circ \]
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C)
\[90{}^\circ \]
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D)
\[140{}^\circ \]
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E)
None of these
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Find the depth of the sea at a point when a ship sends out a sound wave and receives an echo after 1 second if the speed of sound in water is 1500 m/s?
A)
750 m
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B)
100 m
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C)
500 m
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D)
1000 m
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E)
None of these
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Read the following statements: Statement 1: The range of human audible sound is 20 Hz to 20000 Hz. Statement 2: In diffuse reflection, angle of incidence is equal to the angle of reflection. Which one of the following is correct with respect to the above statements?
A)
Statement 1 is true and 2 is false
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B)
Statement 2 is true and 1 is false
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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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Gir national part is situated in which one of the following states of India?
A)
Uttrakhand
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B)
Gujrat
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C)
Karnatka
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D)
Rajasthan
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E)
None of these
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How many years does Neptune take to complete one revolution around the sun?
A)
2 years
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B)
155.67 years
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C)
145.75
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D)
164.79 years
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E)
None of these
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The group of stars which appears to form recognizable shape or pattern is known as:
A)
Galaxy
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B)
Clusters
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C)
Super-clusters
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D)
Constellation
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E)
None of these
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Nitrogen oxide, which is a major pollutants of air, is prduced by burning of:
A)
Petrol
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B)
Diesel
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C)
Coal
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D)
All of these
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E)
None of these
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A very fast combustion reaction, in which a large amount of heat, light and sound are produced, is called:
A)
Rapid combustion
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B)
Spontaneous combustion
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C)
Explosive combustion
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D)
All of these
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E)
None of these
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Name the process of combining nitrogen and oxygen by passing air through an electric arc\[(\,\sim 3000{}^\circ C)\], nitric oxide is formed. It combines with more oxygen to form nitrogen dioxide and these nitrogen dioxide when absorbed in water gives nitric acid.
A)
Birkland-Eyde's process
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B)
Haber's process
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C)
Nitrogen cycle
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D)
All of these
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E)
None of these
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Algae occurs in many different colours. Whichone of the following algae has brown cooler?
A)
Anabaena
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B)
Nostoc
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C)
Spirogyra
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D)
Fucus
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E)
None of these
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Which one of the following fibres bums slowly with the smell of burning hair
A)
Cotton
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B)
Rayon
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C)
Silk
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D)
All of these
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E)
None of these
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Anita: Non metals have a tendency to gain electrons and form negatively charged ions called anions. Preety: Metals have a tendency to lose electrons and form positively charged ions is called cations. Who is correct?
A)
Anita
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B)
Preety
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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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Albert performs the following steps during experiment in chemical laboratory: Step 1: He takes 5 ml of dilute copper sulphate solution in a test tube that is blue in colour. He places a thin plate of zinc metal in solution and stir the solution for a few minutes. He notices that the blue colour of the solution fades away and red precipitate of copper settle down. Step 2: Again he takes zinc sulphate solution in a test tube and place a copper wire in it. Shake it for some time and see if there is any change in colour or any precipitate is formed. He notices that there is no change in the colour of the solution, and no precipitate is formed. Which one of the following is true about the conclusion of experiment performed by Albert?
A)
No conclusion can be drawn from the above experiment.
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B)
More reactive metal can displace less reactive metals.
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C)
Less reactive metal can displace more reactive metals.
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D)
Step 1 is meaningful experiment whereas step 2 is meaning less experiment.
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E)
None of these
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Arrange the given fuels in their increasing order depending upon their calorific values: LPG, Wood, Petrol, Coke, Coal, Dung cake, Biogas, Hydrogen.
A)
Dung cake < Wood < Coal < Coke < Petrol < Biogas < Hydrogen < LPG
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B)
Wood < Dung cake < Coal < Coke < Biogas < Petrol < LPG < Hydrogen
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C)
Dung cake < Wood < Coal < Coke < Biogas < Petrol < LPG < Hydrogen.
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D)
Coke < Biogas < Petrol < LPG < Hydrogen < Dung cake < Wood <Coal
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E)
None of these
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Ramcharan is sleeping in a closed room with a coal fired fire place (Angithi) inside, on a cold wintry night. Which one of the following is correct about the chemical reaction in Ramcharan's respiratory system if there is no fresh air can enter the room?
A)
Haemoglobin combines with carbon monoxide in the blood to form carboxy-haemoglobin, which cannot carry oxygen causes a deficiency of oxygen in the tissues.
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B)
Haemoglobin combines with carbon monoxide in the blood to form carbohydrates which causes excess of carbohydrates and deficiency of oxygen in the tissues.
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C)
Haemoglobin combines with carbon monoxide in the blood to form carbon tetrachloride causes dificiency of oxygen in the tissues.
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D)
All of these
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E)
None of these
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Both plant and animal cells contain Endoplasmic reticulum. What work does it perform in cell?
A)
Helps in protein synthesis.
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B)
Helps in the transport of substances within the cell.
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C)
Secrete many substances.
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D)
All of these
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E)
None of these
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Function of the given gland in the picture of human body is:
A)
Secretes Bile
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B)
Secretes Digestive hormones
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C)
Secretes hormones to prepare human body to fight or run fast.
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D)
All of these
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E)
None of these
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SI unit of force is Newton which is denoted by letter N. Another non SI unit of force is kg f (kilgram force). Which one of the following is correct about the relationship between kilogram force and newton?
A)
1 kilogram force = 9.8 N.
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B)
1 kilogram force = 1.8 N.
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C)
1 kilogram force = 12 N.
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D)
1 kilogram force = 8 N.
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E)
None of these
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Which one of the following is the correct condition in which object does not move when an amount of force (F) is applied?
A)
F/f = 2
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B)
f = F
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C)
f = 3F
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D)
F = 4f
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E)
None of these
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Sneha weighing 50 kg is standing on pencil heels, each having an area of cross section of\[1\,\,c{{m}^{2}}\]. An elephant weighing 2000 kg and foot area of cross section of \[250\,\,c{{m}^{2}}\] standing on the floor. Which one of the following is correct about the force exerted by them?
A)
Sneha exerts 12.5 times more pressure than the elephant.
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B)
Elephant exerts 2000times more pressure than Sneha.
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C)
Both exerts the same pressure
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D)
Sneha exerts 20 times more pressure than the elephant.
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E)
None of these
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Find the speed of the sound when a gun is fired in the air at a distance of 660 m from a person and person hears the sound of the gun after 2s.
A)
100 m/s
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B)
200 m/s
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C)
220 m/s
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D)
330 m/s
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E)
None of these
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Which one of the following sound waves is a high pitched sound wave?
A)
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B)
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C)
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D)
All of these
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E)
None of these
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In an electrolytic cell, the electrode at which electricity enters the solution is called:
A)
Anode
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B)
Cathode
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C)
Conductor
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D)
All of these
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E)
None of these
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In which one of the following manner an ammeter in a circuit is connected for current measurement?
A)
Series
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B)
Parallel
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C)
Both series and parallel
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D)
All of these
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E)
None of these
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