Which of the following are correct with respect to the unit of radioactivity? (i) The SI unit of radioactivity is curie (Ci) (ii) `1 Ci = 3.7 xx 10^(-

Which of the following are correct with respect to the unit of radioactivity? (i) The SI unit of radioactivity is curie (Ci) (ii) `1 Ci = 3.7 xx 10^(-
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Which of the following are correct with respect to the unit of radioactivity? (i) The SI unit of radioactivity is ... (i) and (ii) D. (ii) and (iv)
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“Curie” is the unit of – (1) radioactivity (2) temperature (3) heat (4) energy

Description : “Curie” is the unit of – (1) radioactivity (2) temperature (3) heat (4) energy

Last Answer : (1) radioactivity Explanation: The curie (Symbol Ci) is a non-SI unit of radioactivity named after Marie and Pierre Curie.

Curie is an unit of – (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Description : Curie is an unit of – (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Last Answer : (1) Radioactivity Explanation: The curie (symbol Ci) is a non-SI unit of radioactivity, named 'in honour of Pierre Curie. It was originally defined as "the quantity or mass of radium emanation in equilibrium with one gram of radium (element)".

"Curie" is unit of : (1) Radioactivity (2) Temperature (3) Heat (4) Energy

Description : "Curie" is unit of : (1) Radioactivity (2) Temperature (3) Heat (4) Energy

Last Answer : (1) Radioactivity Explanation: Curie, in physics, unit of activity of a quantity of a radioactive substance, named in honour of the French physicist Marie Curie. One curie (1 Ci) is equal ... ). Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability.

Unit of radioactivity is (A) Barn (B) Fermi (C) Angstrom (D) Curie

Description : Unit of radioactivity is (A) Barn (B) Fermi (C) Angstrom (D) Curie

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Unit of radioactivity is (A) Barn (B) Fermi (C) Angstrom (D) Curie

Description : Unit of radioactivity is (A) Barn (B) Fermi (C) Angstrom (D) Curie

Last Answer : (D) Curie

Curie is an unit of (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Description : Curie is an unit of (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Last Answer : Radioactivity

“Curie” is unit of : (1) Radioactivity (2) Temperature (3) Heat (4) Energy

Description : “Curie” is unit of : (1) Radioactivity (2) Temperature (3) Heat (4) Energy

Last Answer : Radioactivity

Compare the SI and CI engine on the basis of: (i) Compression Ratio (ii) Operating Speed (iii) Power O/P per weight.

Description : Compare the SI and CI engine on the basis of: (i) Compression Ratio (ii) Operating Speed (iii) Power O/P per weight.

Last Answer : Parameter SI Engine CI Engine (i) Compression Ratio Compression ratio is low, about 10:1 limited by detonation Compression ratio is higher, about 18:1 to 22:1 (ii) ... due to lower compression ratio. Power output is more than SI engine due to higher compression ratio.

Natural radioactivity was discovered by a)Schmidt b)Curie c)Becquerel d)Rutherford

Description : Natural radioactivity was discovered by a)Schmidt b)Curie c)Becquerel d)Rutherford

Last Answer : Natural radioactivity was discovered by a)Schmidt b)Curie c)Becquerel d)Rutherford A. Rutherford B. Becquerel C. Curie D. Schmidt

Radioactivity was discovered by (1) J.J. Thomson (2) W.Roentgen (3) H.Becquerel (4) M. Curie

Description : Radioactivity was discovered by (1) J.J. Thomson (2) W.Roentgen (3) H.Becquerel (4) M. Curie

Last Answer : (3) H.Becquerel Explanation: Antoine-Henri Becquerel is known for his discovery of radioactivity, for which he received the Nobel Prize for Physics in 1903. Unstable atomic nuclei will spontaneously decompose to form nuclei with a higher stability.

The phenomenon of radioactivity was discovered by - (1) Marie Curie (2) Pierre Curie (3) Henri Becquerel (4) J.J Thomson

Description : The phenomenon of radioactivity was discovered by - (1) Marie Curie (2) Pierre Curie (3) Henri Becquerel (4) J.J Thomson

Last Answer : (3) Henri Becquerel Explanation: In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays, which had been discovered in 1895 by Wilhelm Roentgen.

Natural radioactivity was discovered by - (1) Marie Curie (2) Ernest Rutherfor (3) Henri Becquerel (4) Enrico Fermi

Description : Natural radioactivity was discovered by - (1) Marie Curie (2) Ernest Rutherfor (3) Henri Becquerel (4) Enrico Fermi

Last Answer : (3) Henri Becquerel Explanation: The Discovery of Radioactivity. In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of xrays, which had been discovered in 1895 by Wilhelm Roentgen.

The phenomenon of radioactivity was discovered by - (1) Marie Curie (2) Pierre Curie (3) Henri Becquerel (4) J.J. Thomson

Description : The phenomenon of radioactivity was discovered by - (1) Marie Curie (2) Pierre Curie (3) Henri Becquerel (4) J.J. Thomson

Last Answer : (3) Henri Becquerel Explanation: In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays

Radioactivity of an isotope is expressed in (A) Barn (B) MeV (C) Curie (D) Ergs

Description : Radioactivity of an isotope is expressed in (A) Barn (B) MeV (C) Curie (D) Ergs

Last Answer : (C) Curie

The phenomenon of radioactivity was discovered by (A) Madam Curie (B) Becquerel (C) Roentgen (D) J.J. Thomson

Description : The phenomenon of radioactivity was discovered by (A) Madam Curie (B) Becquerel (C) Roentgen (D) J.J. Thomson

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Morse test is conducted on the engine to calculate the mechanical efficiency of A. single cylinder CI engine B. single cylinder SI engine C. only on two stroke engines D. multi cylinder engine

Description : Morse test is conducted on the engine to calculate the mechanical efficiency of A. single cylinder CI engine B. single cylinder SI engine C. only on two stroke engines D. multi cylinder engine

Last Answer : ANSWER : D

A two stroke engine has a speed of 750 rpm. A four stroke engine having an identical cylinder size runs at 1500 rpm. The theoretical output of the two stroke engine will (a) Be twice that of the four stroke engine (b) Be half that of the four stroke engine (c) Be the same as that of the four stoke (d) Depend upon whether it is a CI or SI engine

Description : A two stroke engine has a speed of 750 rpm. A four stroke engine having an identical cylinder size runs at 1500 rpm. The theoretical output of the two stroke engine will (a) Be twice that of the four stroke ... ) Be the same as that of the four stoke (d) Depend upon whether it is a CI or SI engine

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Compare SI and CI engine on the basis of air-fuel ratio, power output, emission and knocking.

Description : Compare SI and CI engine on the basis of air-fuel ratio, power output, emission and knocking.

Last Answer : Parameter SI engine CI engine Air-fuel ratio air-fuel ratio is 14.7:1 air-fuel ratio is 20:1 to 70:1  Power output  Power output is Less than CI engine due ... Knocking take place at the end of combustion. Knocking take place at beginning or start of the combustion. 

Compare performance characteristics of SI and CI engines.

Description : Compare performance characteristics of SI and CI engines. 

Last Answer : Variable/Parameter SI Engine CI Engine Power output per unit weight 2.7 Kg/Kw 6.5 Kg/Kw Power output per unit displacement 30 Kw/liter 15 Kw/liter Acceleration Not ... load, idling.  Fuel safety More volatile so less safer Less volatile so more safer

How do you Find From First Principle The Derivative Of 1(x2) plus 1 With Respect To Xx?

Description : How do you Find From First Principle The Derivative Of 1(x2) plus 1 With Respect To Xx?

Last Answer : "First principles" in this context means that you:* Calculate the value of the function, at some point "x+h" * Calculate the value of the function, at some point "x" * Subtract the first result minus the second result * Divide all this ... As a formula: F(x)' = lim (as h --> 0) [F(x+h) - F(x)] / h

A long straight wire is carrying a current of 12 A . The magnetic field at a distance of 8 cm is `(mu_(0) =4pi xx 10^(-7) N A ^(2))`

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In the given reaction `CH_(3)-CH_(2)-NH-CH_(2)-CH_(2)-CI overset((i)CH_(3)I ("excess"))underset((ii)AgOH//Delta)rarr[X]` is the major product, [X] wil

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Discuss causes and remedies for following faults in CI engine: (i) Engine does not start or stalls just after starting (ii) Excessive fuel consumption.

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Curie is the unit of

Description : Curie is the unit of

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Curie is the unit of

Description : Curie is the unit of

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The unit to measure the flow of water is - (1) Micro Mho (2) Ohm meter (3) Milli curie (4) Cusecs

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The unit to measure the flow of water is (1) Micro Mho (2) Ohm meter (3) Milli curie (4) Cusecs

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Number of basic SI unit is _______. (1) 4 (2) 7 (3) 6 (4) 5

Description : Number of basic SI unit is _______. (1) 4 (2) 7 (3) 6 (4) 5

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If the order of matrices A, B and C are `3 xx 4, 7 xx 3 " and " 4 xx 7` respectively, then the order of (AC) B is _____.

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The value of `((log_(2)9)^(2))^((1)/(log_(2)(log_(2)9)))xx(sqrt(7))^((1)/(log_(4)7))` is .......... .

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What is the unit of measurement of radioactivity ?

Description : What is the unit of measurement of radioactivity ?

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What is the unit of Radioactivity

Description : What is the unit of Radioactivity

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What is a neuron? (1) Basic unit of energy (2) Particle released during radioactivity (3) The anti-particle of neutron (4) Basle unit of nervous system

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Unit of Radioactivity?

Description : Unit of Radioactivity?

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MeV is the unit of (A) Radioactivity (B) Energy (C) Potential difference (D) None of these

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What is a neuron ? (1) Basic unit of energy (2) Particle released during radioactivity (3) The anti-particle of neutron (4) Basic unit of nervous system

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In practice, the compression ratio of compression-ignition (CI) engine ranges from (A) 15 to 25 (B) 5 to 10 (C) 40 to 55 (D) 60 to 70

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The value of Stefan-Boltzmann constant in SI unit is (A) 5.6697 × 10 -8W/m2 .°K4 (B) 0.1714 × 10 -8W/m2 .°K4 (C) 5.6697 × 10 -8kcal/m2 . °K4 (D) 0.1714 × 10 -8kcal/m2 . °K4

Description : The value of Stefan-Boltzmann constant in SI unit is (A) 5.6697 × 10 -8W/m2 .°K4 (B) 0.1714 × 10 -8W/m2 .°K4 (C) 5.6697 × 10 -8kcal/m2 . °K4 (D) 0.1714 × 10 -8kcal/m2 . °K4

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If a gas absorbs `200J` of heat and expands by `500 cm^(3)` against a constant pressure of `2 xx 10^(5) N m^(-2)`, then the change in internal energy

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The total number of protons in 10 g of calcium carbonate is `(N_(0) = 6.023 xx 10^(23))` :-

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One atom of an element x weigh `6.643 xx 10^(-23)` g. Number of moles of atom in 20 kg is :-

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`3.011 xx 10^(22)` atoms of an element weight 1.15 g. The atomic mass of the element is :-

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It has been estimated that the total energy ratiated by sun is `3.8 xx 10^(26)` j per second. The source of energy of stars is a thermonuclear reactio

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At radioactive equilibrium, the ratio between two atoms of radioactive elements `A` and `B` is `3.1 xx 10^(9) : 1`. If the half-life period of `A` is

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At radioactive equilibrium, the ratio between two atoms of radioactive elements `A` and `B` is `3.1 xx 10^(9) : 1`. If the half-life period of `A` is

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A reaction develop nuclear energy at the rate of `3 xx 10^(4) kW`. How many atoms of `.^(215)U` undergo fission per second? How much `.^(235)U` is bur

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A glass prism has a refracting angle of `60^@`. The angle of minimum deviation is `40^@`. If velocity of light in vacuum is `3 xx 10^8 m//s`. Calculat

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The velocity of light in glass is `2 xx 10^(8)ms^(-1)` while that in vaccum is `3 xx 10^(8)ms^(-1)`. By how much would an ink dot appeat to be raised

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An electric bulb illuminates a plane surface. The intensity of illumination on the surface at a point 2m away from the bulb is `5 xx 10^(-4)` phot. Th

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Iluminance of `2.4 xx 10^(5)lm//m^(2)` of the surface is produced by sunlight falling normally on the surface of the earth. The distance of the earth

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