Description : An annuity is a series of equal payments occuring at equal time intervals, and this amount includes the sum of all payments plus interest, if allowed to accumulate at a definite rate of interest from ... cost (B) Depreciation by sinking fund method (C) Discrete compound interest (D) Cash ratio
Last Answer : (B) Depreciation by sinking fund method
Description : When a physical property such as charge exists in discrete "packets" rather than in continuous amounts, the property is said to be: w) discontinuous x) abrupt y) quantized z) noncontinuous
Last Answer : ANSWER: Y -- QUANTIZED
Description : The energy required to remove the electron from the outermost shell from a free and isolated atom of the element is called
Last Answer : Ionisation energy.
Description : Electrons which are free to move around are also called A. conduction electrons B. valence shell electrons C. inner electrons D. electron sea
Last Answer : conduction electrons
Description : An electron moves into the electrostatic field between a positive charge and a negative charge. Toward which charge will the electron move?
Last Answer : Toward the positive charge.
Description : For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the __________ filter. (A) Plate & frame (B) Shell & lea (C) Sand (D) Rotary vacuum
Last Answer : (C) Sand
Description : What transmitter component allows the radiation of a large number of discrete frequencies over a wide band?
Last Answer : . Frequency synthesizer.
Description : Components made up exclusively of discrete elements are classified as what type of electronics?
Last Answer : Miniature.
Description : Name the modulation system in which the frequency alternates between two discrete values in response to the opening and closing of a key?
Last Answer : . Frequency-shift keying.
Description : Metals, in general are of low strength and do not possess required physio-chemical and technological properties for a definite purpose. Alloys are therefore more than metals alone. Discuss the arrangement of atoms and Structures of alloys.
Last Answer : Alloys are produced by melting or sintering two ore more metals, or metals and a non-metal, together. Alloys possess typical properties inherent in the metallic state. The chemical elements ... an alloy are its individual portions, each having a single structure with its characteristic features.
Description : A characteristic of the noble gases is that they all: w) have eight electrons in the outer shell x) have low stability y) form many compounds z) have filled outer electron shells
Last Answer : ANSWER: Z -- HAVE FILLED OUTER ELECTRON SHELLS
Description : Which of the following is the correct statement of the second law of thermodynamics? A. It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy ... energy, which can be obtained from a given quantity of heat energy. D. all of the above
Last Answer : Answer: D
Description : Debunching of the electron bunches in the higher modes of a reflex klystron has what effect on output power?
Last Answer : Power is reduced.
Description : What happens to the electrons of a gallium-arsenide semiconductor when they move from the normal low-energy conduction band to the high-energy conduction band?
Last Answer : The electrons become immobile.
Description : Covalent network crystals have-------? A. higher melting point then molecular crystals (Answer) B. lower melting point then molecular crystals C. discrete molecules linked by Van der waals forces D. hydrogen bonding
Last Answer : A. higher melting point then molecular crystals (Answer)
Description : What type of synchro is used in systems requiring large amounts of power and a high degree of accuracy?
Last Answer : A control synchro.
Description : What type of uhf tube was developed to handle large amounts of power?
Last Answer : Planar
Description : Why can acorn and doorknob tubes NOT handle large amounts of power?
Last Answer : The close spacing of tube elements allows for the ready formation of arcs or short circuits.
Description : What term is used for the ability of a spot on a CRT screen to continue to glow after the electron bean has struck it and moved away?
Last Answer : Persistence.
Description : The kinetic energy of an electron is directly proportional to what property?
Last Answer : Velocity.
Description : If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is (A) 1 (B) 2 (C) 3 (D) 4
Last Answer : (B) 2
Description : An electron is present in 4 f sub - shell . The possible values of azimuthal quantum number for this electron are :-
Last Answer : An electron is present in 4 f sub - shell . The possible values of azimuthal quantum number for this electron are :- A. ... 3 B. 1 ,2, 3, 4 C. 3 D. 4
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 : What do we call the outer electron shell of an atom?
Last Answer : The outer electron shell of an atom is the valence shell.
Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.
Last Answer : Methyl phenyl ether can be obtained by reacting - (1) phenolate ions and methyl iodide (2) methoxide ions and bromobenzene (3) methanol and phenol (4) bromobenzene and methyl bromide
Description : The mass of an electron in motion depends upon - (1) Direction of motion (2) B its velocity (3) C its velocity of e- (4) D it’s shell number
Last Answer : (2) B its velocity Explanation: The electron has a mass that is approximately 1/1836 that of the proton. Quantum mechanical properties of the electron include an intrinsic angular momentum (spin) of a half-integer value, expressed in units of the reduced Planck constant, ħ.
Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.
Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.
Description : The distance between the centre of the nucleus and the outermost electron shell of an atom is called
Last Answer : atomic size
Description : Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B ... (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.
Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron
Description : The block of elements in the periodic table which are filling the 4-f electron shell are known as:
Last Answer : ANSWER: LANTHANIDES
Description : Superficially the term object-oriented , means that, we organize software as a (A) collection of continuous objects that incorporates both data structure and behaviour. (B) collection of ... and behaviour. (D) collection of objects that incorporates both discrete data structure and behaviour.
Last Answer : (C) collection of discrete objects that incorporates both data structure and behaviour.
Description : What is the outer shell of an atom called?
Last Answer : The valence shell.
Description : LEDs operating at 850 nm provide sufficient optical power for short-distance, low-bandwidth multimode systems. List three conditions that prevent the use of LEDs in longer distance, higher bandwidth multimode systems.
Last Answer : Multimode fiber dispersion, the relatively high fiber attenuation, and the LED's relatively low optical output power.
Description : The following particles move with same kinetic energy. Which of them has maximum momentum? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle
Last Answer : (4) Alpha Particle Explanation: The formula for kinetic energy in terms of momentum for fundamental particles is basically just a quantized version of the classical formula, KE=(P^2)/2m, where KE is kinetic energy, p is momentum and m is the particle’s mass.
Description : An electron is moved through a potential difference of 1 volt. How much energy in joules was used to move the electron?
Last Answer : ANSWER: 1.6 x 10-19 JOULES
Description : The following particles move with same kinetic energy. Which of them has maximum momentum ? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle
Last Answer : Alpha Particle
Description : The ion that is required in trace amounts for the growth of bacteria is a. Calcium b. Magnesium c. Cobalt d. Sodium
Last Answer : Ans: C
Description : The main use of salt in the diet is to - (1) increase the solubility of the food particles in water. (2) produce in small amounts the hydrochloric acid required for the digestion of food (3) ease the process of cooking (4) make the taste of the food better
Last Answer : (2) produce in small amounts the hydrochloric acid required for the digestion of food Explanation: Salt plays a primary role in the processes of digestion and absorption. Salt activates ... hydrochloric acid. Hydrochloric acid is a very important digestive secretion, which lines the stomach walls.
Description : Minerals known to be required in large amounts for plant growth include (a) potassium, phosphorus, selenium, boron (b) magnesium, sulphur, iron, zinc (c) phosphorus, potassium, sulphur, calcium (d) calcium, magnesium, manganese, copper.
Last Answer : (c) phosphorus, potassium, sulphur, calcium
Description : Which of the following leads to over-capitalization? A. acquiring fixed assets on excessive amounts. B. under-estimation of initial rate of earnings. C. using lower-rate of capitalization. D. under estimation of required funds.
Last Answer : A. acquiring fixed assets on excessive amounts.
Description : The main use of salt in the diet is to (1) increase the solubility of the food particles in water (2) produce in small amounts the hydrochloric acid required for the digestion of food (3) ease the process of cooking (4) make the taste of the food better
Last Answer : produce in small amounts the hydrochloric acid required for the digestion of food
Description : To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular ... units or quanta y) radiant energy in a continuous form z) none of the above.
Last Answer : ANSWER: X -- RADIANT ENERGY IN DISCRETE UNITS OR QUANTA
Description : A shell, initially at rest suddenly explodes into two equal fragments A and B. Which one of the following is observed? (a) A and B move in the same direction with the same speed (b) A ... move in opposite directions with the same speed (d) A and B move in opposite directions with different speeds
Last Answer : Ans:(c)
Description : What is the term used to identify the amount of field strength required to cause the electrons to just miss the plate and return to the filament in a circular orbit?
Last Answer : The critical value of field strength
Description : An electron microscope gives higher magnification than an optical microscope, because: (1) It uses more powerful lenses (2) the velocity of electron is smaller than that of visible (3) the ... particles (4) the wavelength of electrons is smaller as compared to the wavelength of visible light
Last Answer : (4) the wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope uses a beam of electrons to illuminate a specimen and produce a ... photons. Magnification is the process of enlarging something only in appearance, not in physical size.
Description : An electron microscope gives higher magnifications than an optical microscope because - (1) The velocity of electrons is smaller than that of light (2) The wavelength of electrons is smaller as ... have more energy than the light particulars (4) The electron microscope uses more powerful lenses
Last Answer : (2) The wavelength of electrons is smaller as compared to the wavelength of visible light Explanation: An electron microscope is a microscope that uses a beam of accelerated electrons as a spume ... a higher resolving power than a light microscope and can reveal the structure of smaller objects.
Description : Which of the following statements correctly describes the general reactivity of alkynes? (a) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. (b) The σ bonds ... fail to undergo electrophilic addition reactions. (d) Alkynes are generally more reactive than alkenes.
Last Answer : Alkynes are generally more reactive than alkenes.
Description : Which one of the following statements is WRONG? (A) A singlet or triplet state may result when one of the electrons from the HOMO is excited to higher energy levels (B) In an ... the electron from the singlet excited state returns to ground state, the molecule always shows fluorescence phenomenon
Last Answer : (C) Triplet excited state is more stable than the singlet excited state
Description : Which one of the following is necessary for mass spectrometry to occur? A. Loss of an electron B. Change of alignment of a proton in a magnetic field C. A molecular vibration D. Excitation of an electron from the ground state to a higher energy state
Last Answer : Loss of an electron