Description : In a period from Li to F, ionisation potential – (1) cannot be predicted (2) increases (3) decreases (4) remains same
Last Answer : (1) cannot be predicted
Description : For an isothermal process, the internal energy of a gas (A) Increases (B) Decreases (C) Remains unchanged (D) Data insufficient, can't be predicted
Last Answer : (C) Remains unchanged
Description : The ionisation energy of `H` is `13.6 eV`. Calculate the ionization energy of `Li^(2+)` ions.
Last Answer : The ionisation energy of `H` is `13.6 eV`. Calculate the ionization energy of `Li^(2+)` ions. A. 13.6 eV B. 27.2 eV C. 40 .8 eV D. 122 .4 eV
Description : In general, as you move across a period (left to right) electronegativity: w) increases x) decreases y) remains the same z) increases or decreases
Last Answer : ANSWER: W -- INCREASES
Description : In forward bias, the width of potential barrier __________ (a) Increases (b) decreases (c) remains same (d) no effect
Last Answer : (b) decreases
Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern
Last Answer : (1) decreases Explanation: The atomic radius is the distance from the atomic nucleus to the outermost stable electron orbital in an atom that is at equilibrium. It tends to decrease across a period from ... usually increases while going down a group due to the addition of a new energy level (shell).
Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern
Last Answer : increases
Description : In a period of inflation and price rises the supply of money remains - (1) the same (2) increases (3) decreases (4) increases or decreases pro-portionately.
Last Answer : (2) increases Explanation: Money supply is the total amount of monetary assets available in an economy at a specific time. The relation between money and prices is historically associated with the quantity ... money-supply growth, at least for rapid increases in the amount of money in the economy.
Description : As frequency increases, the period ________. A) decreases B) increases C) remains the same D) doubles
Last Answer : decreases
Description : As a pendulum is raised to higher altitudes, its period: w) increases x) decreases y) remains the same z) decreases, then remains the same
Description : In a period of inflation and price rise the supply of money remains (1) the same (2) increases (3) decreases (4) increases or decreases proportionately.
Description : When earth fault occurs: a) voltage potential at the earth mat increases due to grounding b) voltage potential at the earth mat decreases due to grounding c) voltage potential at the earth mat remains zero irrespective of fault d) none of the above
Last Answer : Ans: A
Description : A source produces sound waves under water. Waves travel through water and then into air. Which of the following statements about the frequency (f) and the wavelength () is correct and sound passes from ... increases. (3) remains unchanged but f decreases. (4) remains unchanged but f increases.
Last Answer : 3) remains unchanged but f decreases.
Description : 1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science
Last Answer : a) It is because nuclear charge increases due to increase in atomic number, therefore, force of attraction between nucleus and valence electrons increases, i.e. effective nuclear charge increases, hence ... element is ‘F’ because it can gain electrons easily due to smallest atomic size.
Description : Each time a defect gets detected and fixed, the reliability of a software product (A) increases. (B) decreases. (C) remains constant. (D) cannot say anything.
Last Answer : (A) increases.
Description : Choose the correct statement. (a) Electronegativity increases down a group (b) Electronegativity decreases down a group (c) Electronegativity decreases from left to right along a period (d) Electronegativity changes along a group, but remains constant along a period
Last Answer : Ans:(b)
Description : When iron rusts, its weight – (1) decreases (2) increases (3) remains the same (4) first increases and then decreases
Last Answer : (2) increases Explanation: When iron rusts, oxide compounds are formed due the interaction between oxygen in the air or in water and the metal. Because of the oxygen atoms binding with the metal, the weight of the metal with rust will increase.
Description : When iron rusts, its weight : (1) decreases (2) increases (3) remains the same (4) first increases and then decreases
Last Answer : (2) increases Explanation: When iron rusts, oxide compounds are formed due the interaction between oxygen in the air or in water an the metal.
Description : In general, as you move down a family the ionization energy: w) increases x) decreases y) remains the same z) increases or decreases
Last Answer : ANSWER: X -- DECREASES
Description : When iron rusts, its weight (1) decreases (2) increases (3) remains the same (4) first increases and then decreases
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 increasing order of reactivity among group 1 elements is Li
Last Answer : Ans. In group 1 elements (alkali metals) the reactivity of the metals is mainly due to the electron releasing tendency of their atoms, which is related to ionization enthalpy, Since ... electron gain enthalpy. Since both of them decrease down the group, the reactivity therefore decreases.
Description : Which bond has the LEAST ionic character? w) H - F x) Li - F y) Li - Br z) F - F
Last Answer : ANSWER: Z -- F - F
Description : What happens to its potential energy when an object is taken to high altitude? (1) Its potential energy increases (2) Its potential energy decreases (3) Its potential energy remain same (4) None of the above
Last Answer : (1) Its potential energy increases Explanation: When an object is taken to high altitude its potential energy increases.
Description : When load factor and diversity factor increases ___________ a) cost of electricity decreases b) cost of electricity also increases c) cost of electricity remains same d) cost of electricity increases exponential
Description : At lower temperatures and pressures, the latent heat of vaporization of a refrigerant (a) decreases (b) increases (c) remains same (d) depends on other factors
Last Answer : Ans: b
Description : Work input to the air compressor with n as index of compression A. Increases with increase in value of n B. Decrease with increase in value of n C. remains same whatever the value of n D. first increase and then decreases with increase of value of n.
Last Answer : ANSWER : A
Description : When iron rusts, the weight (a) Increases (b) Decreases (c) Remains the same (d) First increases then decreases
Last Answer : Ans:(a)
Description : If speed of rotation of the earth increases, the weight of the body – (1) decreases (2) increases (3) remains the same (4) may increase or decrease
Last Answer : (1) decreases Explanation: The weight of a body on the earth is the amount of gravitational pull on it exerted by the earth. Similarly there is another force exerted on a body on earth, that ... under the influence of the centrifugal force and the weight of the body will seem to have decreased.
Description : With the increase of pressure, the boiling point of any substance - (1) Increases (2) Decreases (3) Remains Same (4) Becomes zero
Last Answer : (1) Increases Explanation: The temperature stays the same until all the liquid has vaporized. As the temperature of a liquid rises, the pressure of escaping vapor also rises, and at the boiling point ... vapor is equal to that exerted on the liquid by the surrounding air, causing bubbles to form.
Description : If cream is removed from milk, its density – (1) Increases (2) Decreases (3) Remains the same (4) May increase or decrease
Last Answer : (1) Increases Explanation: The density of pure fresh milk being on the average 1.032, while the density of fat globules is about 0.86. It follows that the removal of cream will increase the density, while the addition of water will decrease it.
Description : As we go from Equator to North pole the value of `S, the acceleration due to gravity (1) remains the same (2) decreases (3) increases (4) None of the above
Last Answer : (3) increases Explanation: The acceleration due to gravity of earth is the rate of increase of velocity of a body falling freely towards the earth. At a given place, the value of acceleration due to gravity ... out at the equator. The value of 'g' is minimum at the equator and maximum at the poles.
Description : Due to rusting the weight of iron - (1) Decreases (2) Increases (3) Remains the same (4) Uncertain
Last Answer : (2) Increases Explanation: Corrosion of a block of metal - Iron to Iron Oxide (rust), Aluminum to Bauxite, Cooper to Cupric-oxide, or otherwise - does not change the weight of the metal in the system.
Description : With the increase of pressure, the boiling point of any substance – (1) Increases (2) Decreases (3) Remains Same (4) Becomes zero
Description : When the length and cross sectional area of a wire are both tripled, the resistance _____________. A. increases nine fold B. increases three fold C. remains the same D. decreases six fold
Last Answer : Answer: C
Description : When the current in a power transmission line is increased, the power loss _____________. A. increases as the square of the current B. decreases as the square root of the current C. remains the same, as it is independent of current flow D. increases in direct proportion as the current
Last Answer : Answer: A
Description : When the voltage remains constant, and the resistance increases in a series circuit, current flow _____________. A. decreases B. remains the same C. increases D. increases by the square
Description : When the voltage remains constant and the resistance is increased in a series circuit, the flow of current _____________. A. increases by the square of the original value B. increases C. remains the same D. decreases
Last Answer : Answer: D
Description : As the height of a satellite orbit gets lower, the speed of the satellite _________. A. increases B. decreases C. remains the same D. None of the above
Last Answer : A. increases
Description : With increase in pressure, the relative volatility for a binary system (A) Increases (B) Decreases (C) Remains same
Last Answer : (B) Decreases
Description : Due to atmospheric refraction, apparent length of the day (a) increases (b) decreases (c) remains the same (d) all of these
Last Answer : (a) increases
Description : For a given fluid, as the pipe diameter increases, the pumping cost (A) Decreases (B) Increases (C) Remains the same (D) May increase or decrease, depending upon whether the fluid is Newtonian or non-Newtonian
Last Answer : (A) Decreases
Description : The volume of a fluid __________ as the pressure increases. (A) Remains same (B) Decreases (C) Increases (D) None of these
Last Answer : Answer: Option B
Description : Diagonal tension in a beam (A) Is maximum at neutral axis (B) Decreases below the neutral axis and increases above the neutral axis (C) Increases below the neutral axis and decreases above the neutral axis (D) Remains same
Last Answer : Answer: Option C
Description : With storage, strength of cement (A) Increases (B) Decreases (C) Remains the same (D) None to these
Description : After storage, the strength of cement (A) Decreases (B) Increases (C) Remains same (D) May increase or decrease
Last Answer : Answer: Option A
Description : When liquid water is converted to steam at 100˚C, the entropy of water a. increases b. decreases c. remains the same d. none of the above
Description : As the workability increases compaction factor [ A ] Decreases [ B ] Increases [ C ] Remains same [ D ] None of the above
Last Answer : [ B ] Increases
Description : If the weight of an aircraft is increased the maximum gliding range: a. Decreases b. Increases c. Remains the same, and rate of descent is unchanged d. Remains the same, but rate of descent increases
Last Answer : d. Remains the same, but rate of descent increases
Description : With the increase of carbon content in steel, maximum stress (A) Increases (b) Decreases (C) Remains the same (d) none
Last Answer : (A) Increases