A reaction which is catalysed by a base is catalysed by all substances which have a tendency to (A) Lose a proton (B) Gain a proton (C) Gain an electron (D) None of these

A reaction which is catalysed by a base is catalysed by all substances
which have a tendency to
(A) Lose a proton
(B) Gain a proton
(C) Gain an electron
(D) None of these
by

1 Answer

Answer :

(B) Gain a proton
by

Related questions

. A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to (A) Lose a proton (B) Gain a proton (C) Lose an electron(D) None of these

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Last Answer : (A) Lose a proton

The more positive the E0, the greater the tendency of the oxidant member of that pair to (A) Lose electrons (B) Gain electrons (C) Lose (or) gain electrons (D) Lose and gain electrons

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Last Answer : B

If the more negative standard reduction potential of a redox pair, the greater the tendency to (A) To lose electrons (B) To gain electrons (C) To lose/gain electrons (D) To lose and gain electrons

Description : If the more negative standard reduction potential of a redox pair, the greater the tendency to (A) To lose electrons (B) To gain electrons (C) To lose/gain electrons (D) To lose and gain electrons

Last Answer : A

The reactivity of an ionic compound element is explained as its tendency to attain noble gas configuration. How do the elements do so? (1) Lose electrons (2) Gain electrons (3) Both are correct (4) Both are incorrect

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

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Last Answer : (A) Electron

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

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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

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In protolytic reactions in which the reactants are much stronger as an acid and a base than the products, the proton transfer reaction: w) does not occur x) approaches completeness y) produces a much stronger acid and a much weaker base z) produces a much weaker acid and a much stronger base

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Last Answer : ANSWER: X -- APPROACHES COMPLETENESS

In order to become a/an ______, an atom of chlorine must ______ an electron. a. Ion; Gain b. Molecule; Lose c. Ion; Lose d. Molecule; Gain

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Last Answer : a. Ion; Gain

Pick out the correct statement. (A) Positron is the antiparticle of electron (B) In α-decay, the ratio of neutron to proton decreases (C) Ionising power of β-rays is higher than that of α-rays (D) Speed of α-rays is more than that of γ-ray

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Positron is a/an (A) Nucleus having two protons (B) Helium nucleus (C) Electron with positive charge (D) Nucleus with one proton and one neutron

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Last Answer : (C) Electron with positive charge

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Last Answer : (D) Positron is heavier than a proton

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

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Last Answer : (A) Electron

An electron has a mass that is approximately __________ that of the proton. (A) 1836 (approximately) (B) 1/1836 (approximately) (C) 1 (D) ∞

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The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron? (A) 159 (B) 1837 (C) 2537 (D) 10000

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Last Answer : (B) 1837

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Last Answer : Option C

What is the Thiele modulus of the solid catalysed first order reaction as shown in the bellow figure, if the pore diffusion offers negligible resistance to reaction? (A) < 5 (B) < 0.5(C) > 1 (D) 5

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Last Answer : (B) < 0.5

For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption. (A) Physical (B) Chemical (C) Both (A) and (B) (D) Neither (A) nor (B)

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A photochemical reaction is(A) Accompanied with emission of light (B) Catalysed by light (C) Initiated by light (D) All (A), (B) & (C)

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In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for (A) Fast reactions in catalyst of small pore diameter (B) Fast reaction in catalyst of large pore diameter (C) Slow reactions in catalyst of small pore diameter (D) Slow reactions in catalyst of large pore diameter

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If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst (A) Porosity is very important (B) Porosity is of less importance (C) Internal surface area is utilised efficiently (D) None of these

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Kinetics of a solid catalysed reaction can best be studied in a __________ reactor. (A) Batch (B) Plug-flow (C) Mixed (D) None of these

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A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (ke ff) is given by (A) ke ff = k + kg (B) ke ff = (k+ kg )/2 (C) ke ff = (kkg ) 1/2 (D) 1/ke ff = 1/k + 1/kg

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Last Answer : (D) 1/ke ff = 1/k + 1/kg

The effectiveness factor for large value of Thiele modulus [L√(K/D1 )] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2 /second). (A) L √(K/D1 ) (B) 1/[L√(K/D1 )] (C) 1 (D) ∞

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A photochemical reaction is __________ light. (A) Initiated by (B) Accompanied with emission of (C) Catalysed by (D) Used to convert heat energy into

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Could a neutron be a proton and an electron?

Description : Could a neutron be a proton and an electron?

Last Answer : Not really, since that particular combination is a hydrogen atom. A neutron consists of three individual quarks, one blue, one red and one green. The quark colors refer to the charge of a quark, ... a chain reaction, it would never hit its target, because the like charges would repel each other.

How much is the mass of an electron, proton and neutron ? -Science

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The average current due to an electron orbiting the proton in the `n^(th)` Bohr orbit of the hydrogen atom is

Description : The average current due to an electron orbiting the proton in the `n^(th)` Bohr orbit of the hydrogen atom is

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F=qvb is valid for proton or electron

Description : F=qvb is valid for proton or electron

Last Answer : F=qvb is valid for proton or electron

An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then

Description : An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then

Last Answer : An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then A. ... D. path of both will be straight line

A proton and an electron both moving with the same velocity v enter into a region of magnetic field directed perpendicular to the velocity of the part

Description : A proton and an electron both moving with the same velocity v enter into a region of magnetic field directed perpendicular to the velocity of the part

Last Answer : A proton and an electron both moving with the same velocity v enter into a region of magnetic field ... be higher D. their orbital radii will be same

What is comprised of the other three proton atom electron neutron?

Description : What is comprised of the other three proton atom electron neutron?

Last Answer : An atom contain protons, electrons and neutrons.

What is comprised of the other three proton atom electron neutron?

Description : What is comprised of the other three proton atom electron neutron?

Last Answer : An atom contain protons, electrons and neutrons.

A student makes scale models of the subatomic particles. He uses an object with a mass of 1 g to represent an electron. Approximately what mass should the object have that he uses to represent the proton?

Description : A student makes scale models of the subatomic particles. He uses an object with a mass of 1 g to represent an electron. Approximately what mass should the object have that he uses to represent the proton?

Last Answer : about 1,800 g A+

The nucleus of a hydrogen atom consists of (a) One proton (b) One proton + two neutrons (c) One neutron only (d) One electron only

Description : The nucleus of a hydrogen atom consists of (a) One proton (b) One proton + two neutrons (c) One neutron only (d) One electron only

Last Answer : Ans:(a)

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

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

Last Answer : Ans:(c)

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

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.

Which one of the following has greatest mass? (1) electron (2) proton (3) neutron (4) hydrogen nucleus

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Last Answer : (3) neutron

The antiparticle of an electron is – (1) Positron (2) Proton (3) Alpha particles (4) Beta particles

Description : The antiparticle of an electron is – (1) Positron (2) Proton (3) Alpha particles (4) Beta particles

Last Answer : (1) Positron Explanation: Corresponding to most kings of particles, there is an associated antiparticle with the same mass and opposite charge (including electric charge). The antiparticle of the ... radioactive decay. The opposite is also true: the antiparticle of the positron is the electron.

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

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

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An acid is a substance which (1) Donates a proton (2) Accepts an electron (3) Give H+ in water (4) All

Description : An acid is a substance which (1) Donates a proton (2) Accepts an electron (3) Give H+ in water (4) All

Last Answer : (4) All Explanation: An acid is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red and the ability to react with bases and certain metals to form salts.

Nuclear fission is caused by the impact of. (1) Proton (2) Electron (3) Neutron (4) (1) and (b)

Description : Nuclear fission is caused by the impact of. (1) Proton (2) Electron (3) Neutron (4) (1) and (b)

Last Answer : (3) Neutron Explanation: In such a reaction, free neutrons released by each fission event can trigger yet more events, which in turn release more neutrons and cause more fission.

The nuclear particle having no mass and no charge, but only spin is - (1) proton (2) neutrino (3) meson (4) electron

Description : The nuclear particle having no mass and no charge, but only spin is - (1) proton (2) neutrino (3) meson (4) electron

Last Answer : (2) neutrino Explanation: Neutrinos do not carry electric charge, and have mass quite small, though nonzero. Their mass is tiny even by the standards of subatomic particles. They are electrically neutral, weakly interacting elementary subatomic particles with half-integer spin.

Which of the following is not a nucleon? (1) Proton (2) Neutron (3) Electron (4) Positron

Description : Which of the following is not a nucleon? (1) Proton (2) Neutron (3) Electron (4) Positron

Last Answer : (4) Positron Explanation: Nucleon is one of the particles that makes up the atomic nucleus. Each atomic nucleus consists of one or more nucleons, and each atom in turn consists of a cluster of ... nucleon number may be used in place of the more common terms mass number or atomic mass number.

The fundamental particles present in the nucleus of an atom are - (1) Electron, proton (2) Proton, neutron (3) Neutron, electron (4) Neutron, positron

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Last Answer : (2) Proton, neutron Explanation: The nucleus is the very dense region consisting of protons and neutrons at the center of an atom. It was discovered in 1911, as a result of Ernest Rutherford's ... mass of an atom is located in the nucleus, with a very small contribution from the orbiting electrons.

Nuclear fission is caused by the impact of - (1) Proton (2) Electron (3) Neutron (4) None of these

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Last Answer : (3) Neutron Explanation: Nuclear fission in fissile fuels are the result of the nuclear excitation energy produced when a fissile nucleus captures a neutron.