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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Basic unit of nervous system

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Description : 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

Last Answer : (4) Basle unit of nervous system Explanation: A neuron is a nerve cell that is the basic building block of the nervous system. Neurons are specialized to transmit information ... highly specialized nerve cells are responsible for communicating information in both chemical and electrical. forms.

Description : (4) Fundamental unit of nervous system Explanation: A neuron is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon.

Last Answer : Water cycle refers to - (1) an integrated attempt to recycle water in relatively arid regions (2) constant movement of water from ocean to land and back to ocean once again (3) ... management of water in areas excessively plagued with water-logging (4) water distribution in relatively dry area

Description : The anti-particle to an electron is: w) proton x) positron y) neutron z) anti-proton

Last Answer : ANSWER: X -- POSITRON

Description : A moving neutron collides with a stationary α-particle. The fraction of the kinetic energy lost by the neutron is – (1) ¼ (2) 1/16 (3) 9/25 (4) 16/25

Last Answer : (4) 16/25

Description : A moving neutron collides with a stationary a – particle. The fraction of the kinetic energy lost by the neutron is

Last Answer : 16/25

Description : The physicist Chadwick is known for his association with: w) the alpha particle x) the neutron y) the cloud chamber z) the electron

Last Answer : ANSWER: X -- THE NEUTRON

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.

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)".

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.

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

Last Answer : Radioactivity

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

Last Answer : Radioactivity

Description : Name the particle that is most essential to continue the chain reaction during the fission of uranium - (1) Electron (2) Proton (3) Neutron (4) Positron

Last Answer : (3) Neutron Explanation: Nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing ... in the modern world is usually a deliberately produced manmade nuclear reaction induced by a neutron.

Description : Name the particle that is most essential to continue the chain reaction during the fission of uranium- (1) Electron (2) Proton (3) Neutron (4) Positron

Last Answer : Neutron

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 : Number of conduction electrons per unit volume is A. electron number B. number density C. proton number D. neutron numbe

Last Answer : number density

Description : The ability of an atom to absorb neutrons is its neutron capture cross section. The unit of measurement for neutron capture cross section is: w) the nucleus volume x) capture capacity y) resonance quotient z) barn

Last Answer : ANSWER: Z -- BARN

Description : Of the following particles, the particle having the least mass is (a) Meson (b) Neutron (c) Electron (d) Proton

Last Answer : Ans:(c)

Description : The particle required to continue the chain process of Uranium fission is – (1) Electron (2) Proton (3) Neutron (4) Positron

Last Answer : (3) Neutron Explanation: Fission as encountered in the modern world is usually a deliberately produced man-made nuclear reaction induced by a neutron. The nuclear fuels undergo fission when struck by fission ... rate in a nuclear reactor or at a very rapid uncontrolled rate in a nuclear weapon.

Description : Which of the following particles has the dual nature of particle-wave? (1) Electron (2) Meson (3) Proton (4) Neutron

Last Answer : (1) Electron

Description : Mass of a positron is same as that of a/an (A) Electron (B) α-particle (C) Proton (D) Neutron

Last Answer : (A) Electron

Description : In the nuclear reaction, 93N239→ 94Pu 239 + ?; the missing particle is a/an (A) Electron (B) Proton (C) Neutron (D) Position

Last Answer : (A) Electron

Description : Which of the following particles has the dual nature of particle– wave? (1) Electron (2) Meson (3) Proton (4) Neutron

Last Answer : Electron

Description : The particle required to continue the chain process of Uranium fission is : (1) Electron (2) Proton (3) Neutron (4) Positron

Last Answer : Neutron

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

Last Answer : (B) Energy

Description : Name the process of production of energy in the Sun – (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Last Answer : (3) Nuclear fusion Explanation: The source of the sun's fuel is hydrogen and helium gases. Through a special chemical reaction, called nuclear fusion, the hydrogen gas is "burned" releasing an enormous amount of energy in the form of light and heat.

Description : Energy is continuously created in the sun due to – (1) Nuclear fusion (2) Nuclear fission (3) Radioactivity (4) Artificial radioactivity

Last Answer : (1) nuclear fusion Explanation: The central mass of the sun becomes increasingly hot and dense. eventually initiating thermonuclear fusion in its core. It is thought that almost all other stars form ... because some of the mass of the fusing nuclei is converted to energy which is released.

Description : Name the process of production of energy in the Sun (1) Nuclear fission (2) Radioactivity (3) Nuclear fusion (4) Ionization

Last Answer : Nuclear fusion

Description : Energy is continuously created in the sun due to: (1) nuclear fusion (2) nuclear fission (3) radioactivity (4) artificial radioactivity

Last Answer : nuclear fusion

Description : The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : (2) Fission Explanation: A nuclear reactor produces and controls the re-lease of energy from splitting the atoms of uranium, known as nuclear fission. When a fissile atomic nucleus such as uranium235 ... process produces free neutrons and gamma pho-tons, and releases a very large amount of energy.

Description : Basic metals can be converted into gold by ? A. Heating B. Beating C. Artificial nuclear radioactivity (Answer) D. Chemical reaction

Last Answer : C. Artificial nuclear radioactivity (Answer)

Description : The basic process taking place in nuclear reactors is (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : Fission

Description : The fundamental structural and functional unit of nerves system is a. axon b. dendrite c. cell body d. neuron

Last Answer : neuron

Description : Planck's constant was first introduced in order to obtain a correct theoretical prediction of: w) the distribution of frequencies occurring in black body radiation. x) the energy produced by the transformation of mass into energy. y) the speed of light. z) lifetime of the neutron.

Last Answer : ANSWER: W -- THE DISTRIBUTION OF FREQUENCIES OCCURRING IN BLACK BODY RADIATION

Description : The binding energy of a nucleus is defined as one of the following. Is this definition: w) the energy equivalent to its mass x) the mass difference between its neutrons and protons y) the energy ... the difference between the mass of the nucleus and the sum of the masses of its protons and neutrons

Last Answer : ANSWER: Z -- THE DIFFERENCE BETWEEN THE MASS OF THE NUCLEUS AND THE UM 

Description : What is the unit of measurement of radioactivity ?

Last Answer : The unit of radioactivity measure is Becquerel.

Description : 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^(-

Last Answer : 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)

Description : What is the unit of Radioactivity

Last Answer : Curie

Description : Unit of Radioactivity?

Last Answer : Bequerrel

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

Last Answer : (D) Curie

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

Last Answer : (D) Curie

Description : What is the unit of neuron ?

Last Answer : A single neuron of the nervous system

Description : The filtration unit of kidney is - (1) axon (2) nephron (3) neuron (4) yellow fiber

Last Answer : (2) nephron Explanation: Nephron is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine.

Description : Functional unit of 'Kidney' – (1) A on (2) Neuron (3) Nephron (4) Artery

Last Answer : (3) Nephron Explanation: Nephron is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine.

Description : The functional unit of the kidney is - (1) neuron (2) glomerulus (3) nephron (4) ureter

Last Answer : (3) nephron Explanation: Nephron is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium ... blood volume and blood pressure, controls levels of electrolytes and metabolites, and regulates blood pH.

Description : The filtration unit of kidney is (1) axon (2) nephron (3) neuron (4) yellow fiber

Last Answer : nephron

Description : The functional unit of the kidney is (1) neuron (2) glomerulus (3) nephron (4) ureter

Last Answer : nephron

Description : How was the danger of radioactivity first discovered ?

Last Answer : The dangers of radioactivity and radiation were not immediately realized. The strongest reaction to radiation was first noticed in the use of X-rays when electrical engineer and physicist Nikola Tesla ... genetic effects of radiation. He was awarded the Nobel Prize in 1948 for his discovery.

Description : Who Discovered the Atomic Radioactivity ?

Last Answer : In 1896 , the scientist Becquerel noticed this in the atom.

Description : What is radioactivity ?

Last Answer : Alpha , beta and gamma rays are emitted spontaneously from the nucleus of heavy elemental matter , this process is called radioactivity .

Last Answer : Henry Becquerel, the discoverer of radioactivity.