Description : A beam of ultraviolet light of all wavelengths passes through hydrogen gas at room temperature, in the x. dimction. Assume thatall photons emitted due
Last Answer : A beam of ultraviolet light of all wavelengths passes through hydrogen gas at room temperature, in the ... light D. B will contain some visible light
Description : Gas emitted from rice field is
Last Answer : Ans.CH4 (Methan).
Description : Which gas emitted by power stations causes acid rain? (1) Carbon dioxide (2) Sulphur dioxide (3) Helium (4) Nitrogen
Last Answer : (2) Sulphur dioxide Explanation: Sulfur dioxide (SO2) and nitrogen oxides (NOx) are the principal pollutants that cause acid rain. SO2 and NOx emissions released to the air react with water vapor ... Earth. Power plants burning coal and heavy oil produce over two-thirds of the annual SO2 emission.
Description : The major harmful gas emitted by automobile vehicle which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Last Answer : (1) Carbon Monoxide Explanation: Carbon monoxide is the major harmful gas emitted by the automobile vehicles which causes air pollution. Carbon monoxide (CO) - A product of incomplete combustion, ... overexposure (carbon monoxide poisoning) may be fatal. Carbon Monoxide poisoning is a major killer.
Description : The major harmful gas emitted by automobile vehicles which causes air pollution is – (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Description : The gas emitted when the flour and toddy become sour?
Last Answer : Carbon dloxlde
Description : Which harmful gas is emitted by masonry building materials, even ground water? (a) H2S (b) Radon (c) Ammonia (d) CO2
Last Answer : (b) Radon
Description : In order to obtain spectrum from the emitted radiation, the atomic gas or vapour must be excited at a) much less than atmospheric pressure b) much high than atmospheric pressure c) atmospheric pressure d) high pressure and temperature
Last Answer : a) much less than atmospheric pressure
Last Answer : Sulphur dioxide
Description : The major harmful gas emitted by automobile vehicles which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Last Answer : Carbon Monoxide
Description : The major harmful gas emitted by automobile vehicle which causes air pollution is (1) Carbon Monoxide (2) Methane (3) Carbon dioxide (4) Ozone gas
Last Answer : Carbon dioxide
Description : Radiations which is not emitted during radioactivity is – (1) α rays (2) β rays (3) γ rays (4) Cathode rays
Last Answer : (4) Cathode rays Explanation: Radioactivity is the process by which a nucleus of an unstable atom loses energy by emitting particles of ionizing radiation. It includes the emission of energetic alpha particles (α), beta particles (β), and gamma rays.
Description : Which of the following pollutants is not emitted during volcanic eruptions? (A) SO2 (B) H2S (C) CO (D) Hydrocarbons
Last Answer : (D) Hydrocarbons
Description : Gas which is released during catabolic reaction of respiration is_____
Last Answer : Gas which is released during catabolic reaction of respiration is_____
Description : What take oxygen during the lung respiration and oxygen gas is dissolved in the blood stream?
Last Answer : What is the answer ?
Description : What is the harmful ray emitted from color television ?
Last Answer : The harmful rays emitted from color television are called gamma rays.
Description : What ray is emitted from cobalt _60 ?
Last Answer : Gamma rays are emitted.
Description : From which part of the atom e- particle is emitted ?
Last Answer : α- particles are emitted from the nucleus of an atom of radioactive element .
Description : From which part of the atom of the radioactive element is the radioactive ray emitted ?
Last Answer : The radioactive ray is emitted from the nucleus of the atom of the radioactive element.
Description : What are the ways in which electrons are emitted from metal ?
Last Answer : The methods of emission of electrons from metal surface are - ( i) thermal ion emission , (ii) light electric emission ( iii) field emission ( iv) secondary emission.
Description : What are the rays emitted from radioactive material ? What are their names ?
Last Answer : Three types of rays are emitted from the nucleus of radioactive material. Their names are ফাalpha ( α) ray , beta ( ß) ray and gamma ( γ) ray.
Description : `beta` rays are emitted from the _________.
Last Answer : `beta` rays are emitted from the _________.
Description : Cathode rays in a discharge tube are made up of electrons emitted from the plate that is connected to the negative terminal of the DC voltage source.
Last Answer : Cathode rays in a discharge tube are made up of electrons emitted from the plate that is connected to the negative terminal of the DC voltage source.
Description : Carbon monoxide emitted by automobiles directy contributes to
Last Answer : Carbon monoxide emitted by automobiles directy contributes to A. Water pollution B. Noise pollution C. Land pollution D. All the people
Description : Polonium -210 is pollutant emitted from
Last Answer : Polonium -210 is pollutant emitted from A. Laboratory radio-isotopes B. Coolant water of reactors C. Automobile exhausts D. Thorium rich sands.
Description : Carbon monoxide, emitted by automobiles prevents transport of oxygen in body due to
Last Answer : Carbon monoxide, emitted by automobiles prevents transport of oxygen in body due to A. ... haemoglobin D. forming stable compound with haemoglobin.
Description : In which transition minimum energy is emitted :-
Last Answer : In which transition minimum energy is emitted :- A. `ooto1` B. `2to1` C. `3to2` D. `nto(n-1)[nge4]`
Description : When the electron of a hydrogen atom jumps from the n=4 to the n=1 state , the number of all pos - sible spectral lines emitted is :-
Last Answer : When the electron of a hydrogen atom jumps from the n=4 to the n=1 state , the number of all pos - sible spectral ... is :- A. 15 B. 6 C. 3 D. 4
Description : Hydrogen atom electron is excited to n = 4 state , in the spectrum of emitted radiation , number of lines in the ultravoilet and visible regions are r
Last Answer : Hydrogen atom electron is excited to n = 4 state , in the spectrum of emitted radiation , number of lines in the ... 1 , 3 C. 2 , 3 D. 3 , 2
Description : The number of photons emitted in 10 hours by a 60 W sodium lamp `(lambda` of photon `= 6000 Å)`
Last Answer : The number of photons emitted in 10 hours by a 60 W sodium lamp `(lambda` of photon `= 6000 Å)` A. `6. ... C. `8.40xx10^(23)` D. `3.40xx10^(23)`
Description : The number of `alpha`-and `beta`-particles emitted in the nuclear reaction, `._(90)Th^(228) to ._(83)Bi^(212)`, respectively are
Last Answer : The number of `alpha`-and `beta`-particles emitted in the nuclear reaction, `._(90)Th^(228) to ._(83)Bi^( ... ` and `1 beta` D. `4 alpha` and `7 beta`
Description : Statement-2 `beta` particle are emitted by nucleus Because Statement-2 : Following transformation take place in `beta`-emission. `._(0)^(1)n to ._(1)^
Last Answer : Statement-2 `beta` particle are emitted by nucleus Because Statement-2 : Following transformation take ... Statement-2 is false, statement-2 is true
Description : The total number of `alphaandbeta` particles emitted in the nuclear reaction `""_(92)^(238)Uto""_(82)^(214)Pb` is
Last Answer : The total number of `alphaandbeta` particles emitted in the nuclear reaction `""_(92)^(238)Uto""_(82)^(214)Pb` is
Description : Assertion `(A) : K-` shell electron capture is detected by analyzing the wavelength of `X-` ray emitted. Reason `(R):` The wavelength of the `X-` ray
Last Answer : Assertion `(A) : K-` shell electron capture is detected by analyzing the wavelength of `X-` ray emitted. ... D. If both (A) and (R ) are incorrect.
Description : Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are always present inside the nucleus.
Last Answer : Assertion : In a radioactive disintegration, an electron is emitted by the nucleus. Reason : Electrons are ... both (A) and (R ) are incorrect.
Description : In the radioactive change, `._(Z)^(A)P to ._(Z + 1)^(A)Q to ._(Z - 1)^(A - 4)R to ._(Z - 1)^(A - 4)S` The radioactive emitted in sequence are:
Last Answer : In the radioactive change, `._(Z)^(A)P to ._(Z + 1)^(A)Q to ._(Z - 1)^(A - 4)R to ._ ... alpha, gamma` C. `gamma, alpha, beta` D. `beta, gamma, alpha`
Description : `beta`-particle is emitted in radioactivity by
Last Answer : `beta`-particle is emitted in radioactivity by A. conversion of proton to neutron B. from outermost ... to proton D. `beta`-particle is not emitted
Description : The number of `alpha` and `beta`-particles emitted in the nuclear reaction `._(90)^(210) Th to ._(83)^(212)Bi` are:
Last Answer : The number of `alpha` and `beta`-particles emitted in the nuclear reaction `._(90)^(210) Th to ._(83)^(212 ... `3 alpha, 7 beta` D. `4 alpha, 1 beta`
Description : The isotope `._(92)^(235)U` decays in a number of steps to an isotope of `._(82)^(207)Pb`. The groups of particle emitted in this process will be:
Last Answer : The isotope `._(92)^(235)U` decays in a number of steps to an isotope of `._(82)^(207)Pb`. The groups ... C. `7 alpha, 4 beta` D. `10 alpha, 8 beta`
Description : The particles not emitted by radioactive susbstace are:
Last Answer : The particles not emitted by radioactive susbstace are: A. gamma rays B. electrons C. protons D. He nuclei
Description : The nucleus `._(92)^(235)U` decays according to `._(92)^(238)U rarr ._(92)^(234)Th + ._(2)^(4)He`. Calculate the kinetic energy of the emitted `alpha`
Last Answer : The nucleus `._(92)^(235)U` decays according to `._(92)^(238)U rarr ._(92)^(234)Th + ._(2)^(4)He`. ... kg " " ._(2)^(4)He = 6.64807 xx 10^(-27)`
Description : Can a silicon nucleus `(._(14)^(31)Si)` transfrom into a phosphorus nucleus `(._(15)^(31)P)` ? What particle would be emitted in the process ? What is
Last Answer : Can a silicon nucleus `(._(14)^(31)Si)` transfrom into a phosphorus nucleus `(._(15)^(31)P)` ? What ... = 30.97535 am u, m_(p) = 30.97376 am u`
Description : Taking the values of atomic masses from the tables, find the maximum kinetic energy of beta-particles emitted by `Be^(10)` nuclei formed directly in t
Last Answer : Taking the values of atomic masses from the tables, find the maximum kinetic energy of beta- ... )` nuclei formed directly in the ground state.
Description : An electron in an excited hydrogen atom acquired an energy of 12.1 eV. To what energy level did it jump? How many spectral lines may be emitted in the
Last Answer : An electron in an excited hydrogen atom acquired an energy of 12.1 eV. To what ... to lower energy level? Calculate the corresponding wavelengths.
Description : The `6563 Å H_(2)` line emitted by hydrogen in a star is found to be red shifted by `15 Å`. Estimate the speed with which the star is receding from ea
Last Answer : The `6563 Å H_(2)` line emitted by hydrogen in a star is found to be red shifted by `15 ... the speed with which the star is receding from earth.
Description : Energy emitted per second per unit area by Rigal star in Constellation Orion is 17000 times that emited by the sun. What is the surface temperature of
Last Answer : Energy emitted per second per unit area by Rigal star in Constellation Orion is 17000 times that emited by ... star if that of the sun is `6000K`?
Description : Electron are emitted from an electron gun at almost zero velocity and are accelerated by an electric field `E` through a distance of `1.0m` The electr
Last Answer : Electron are emitted from an electron gun at almost zero velocity and are accelerated by an electric field ... .5 nm` may be emitted by the hydrogen?
Description : Whenever a photon is emitted by hydrogen in balmer series it is followed by another in lyman series what wavelength does this latter photon correspond
Last Answer : Whenever a photon is emitted by hydrogen in balmer series it is followed by another in ... what wavelength does this latter photon correspond to?
Description : A hydrogen atom in state `n = 6` makes two successive transition and reaches the ground state in the first transition a photon of `1.13eV` is emitted
Last Answer : A hydrogen atom in state `n = 6` makes two successive transition and reaches the ground state in the ... is the value of n in the intermediate state?