Description : ‘Most federations that are formed by ‘holding together’ do not give equal power to its constituent units.’ Is it true for India ? Explain. -SST 10th
Last Answer : Yes, the above statement is true for India. (i) All states in the Indian Union do not have identical powers. Some states enjoy a special status. Jammu and Kashmir has its own Constitution. Many ... do not have the powers of a state. The central government has special powers in running these areas.
Description : 1. By whom were the members of the Constituent Assembly elected? 2. How much does one degree of the circumference of the earth measure (approx.)? 3. Which was the dynasty that succeeded ... of High Court judges be reduced? 20. Which electromagnetic radiation is most prevalent in the atmosphere?
Last Answer : Answer : 1. By Provincial Assemblies 2. 111 km 3. Rashtrakutas 4. Convection 5. Agricultural farmers 6. Hamilton (Canada) 7. Decreases with height 8. Tanka 9. Cholera 10. 24 11. Efflorescence 12 ... 16. Plasma membrane 17. Cadiz (Spain) 18. Ramtanu Pande 19. During a Financial Emergency 20. Infrared
Description : What is bond enthalpy ? What is its unit ? How we calculate enthalpy in case of complex compound ?
Last Answer : Ans. Amount of energy Required ot break one mole of bonds of particular type b/w two atoms in gaseous state. Its unit is KJ/mole It is obtained by dividing total bond dissociation enthalpy by no. of bonds broken
Description : What is the composition of the compound called heat or structure enthalpy ?
Last Answer : The change in enthalpy that occurs during the production of one mole from the constituent elements of a compound in the state of proof is called the formation of heat or formation enthalpy of the compound. The enthalpy ... a temperature of 25 ° C and a pressure of 1 atm is expressed by ∆ H ° f .
Description : What is the sign of enthalpy of formation of highly stable compound?
Last Answer : Ans. Negative.
Description : If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero (A) Enthalpy (B) Volume (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'
Last Answer : (C) Both 'a' & 'b'
Description : (a) Explain the formation of ionic compound CaO with electron dot structure. Atomic number of calcium and oxygen are 20 and 8 respectively. (b) Name the constituent metals of bronze. -Chemistry
Last Answer : (b) Bronze is made up of copper and tin
Description : The main constituent of antifreeze is what organic compound?
Last Answer : ANSWER: ETHYLENE GLYCOL
Description : Which of the following statement is true? A. the chart is plotted for pressure equal to 760mm Hg B. the constant wbt line represents adiabatic saturation process C. the constant wbt line coincides with constant enthalpy line D. all of the mentioned
Last Answer : ANSWER : D
Description : The change in __________ is equal to the reversible work for compression in steady state flow process under isothermal condition. (A) Internal energy (B) Enthalpy (C) Gibbs free energy (D) Helmholtz free energy
Last Answer : (C) Gibbs free energy
Description : Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant (a) pressure (b) temperature (c) volume (d) internal energy (e) entropy.
Last Answer : Answer : a
Description : According to first law of thermodynamics (a) work done by a system is equal to heat transferred by the system (b) total internal energy of a system during a process remains constant ( ... , enthalpy and entropy during a process remain constant (d) total energy of a system remains constant
Last Answer : Answer : d
Description : 1. Where are red blood corpuscles formed? 2. Where was the first session of the Constituent Assembly held? 3. If there were no atmosphere, what will be the length of the day on the earth? 4. ... fainfall less than 20 cms? 20. Who among the following has issued the coin rupee for the first time?
Last Answer : Answer : 1. In bone marrow 2. New Delhi 3. Decrease 4. Equatorial region 5. Rudradaman 6. Stephen Hawking 7. Dada Saheb Phalke 8. 5-6 litres 9. Cold fronts 10. Charaka Samhita 11. Chief Minister ... 14. 1000 cm 15. Surat16. Darbari 17. Dolphin 18. The Cabinet 19. Jammu and Kashmir 20. Shershah Suri
Description : “Holding together federations” do not give equal power to its constituent units. -SST 10th
Last Answer : (i) All states in the Indian Union do not have identical powers. For example, Jammu and Kashmir enjoys a special status and has its own constitution. (ii) Many provisions of the Indian ... do not have the powers of a state. The Central Government has special powers in running these areas.
Description : The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy. (A) Less than (B) Equal to (C) More than (D) Either (B) or (C); depends on the type of alloy
Last Answer : (A) Less than
Last Answer : Soil is formed from a mixture of granular particles and organic matter seen from rocks on the surface of the earth.
Description : How many `alpha` and `beta` particles should be eliminated so that an isodiaphere is formed?
Last Answer : How many `alpha` and `beta` particles should be eliminated so that an isodiaphere is formed? A. `n alpha, n beta ... 1) beta` C. `n alpha` D. `n beta`
Description : When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus `._(15)^(30)P` with the emission of …. Is formed
Last Answer : When `._(13)^(27)Al` is bombarded whith `alpha`-particles, a radioactive isotope of phosphorus ` ... A. neutrons B. protons C. positrons D. electrons
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 : A colloid formed between gas particles and liquid or solid particles?
Last Answer : Foam
Description : Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby ... B) Irritation in eyes (C) Respiratory trouble (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pick up the correct statement from the following: (A) Sand consists of coarse particles of silica formed due to the disintegration of rocks (B) The grains of sand are not affected by frost (C) Sand ... and do not allow water to rise up between pores due to capillary action (D) All the above
Last Answer : Answer: Option D
Description : The colloidal particles of organic materials formed in the primitive oceans are called a. Coacervates b. Protoplasm c. Cytoplasm d. Nucleic acid
Last Answer : a. Coacervates
Description : Which of the following statements is TRUE about an ELASTIC collision between two particles? Is it true that: w) neither particle loses any of its kinetic energy x) neither particle loses any of ... that lost by the other z) the total kinetic energy before and after the collision remains constant
Last Answer : ANSWER: Z -- THE TOTAL KINETIC ENERGY BEFORE AND AFTER THE COLLISION RE
Description : Two particles A and B having equal charges `+6C`, after being accelerated through the same potential differences, enter a region of uniform magnetic f
Last Answer : Two particles A and B having equal charges `+6C`, after being accelerated through the same potential differences, enter a ... 2` C. `4//9` D. `9//5`
Description : Two particles `X` and `Y` with equal charges, after being accelerated throuhg the same potential difference, enter a region of uniform magnetic field
Last Answer : Two particles `X` and `Y` with equal charges, after being accelerated throuhg the same potential difference, enter a ... D. `(R_(2)//R_(1))^(2)`
Last Answer : Two particles `X` and `Y` with equal charges, after being accelerated throuhg the same potential difference, enter a ... ` D. `((R_(1))/(R_(2))`
Description : Two particles are called to be equal settling, if they are having the same. (A) Size (B) Specific gravity (C) Terminal velocities in the same fluid & in the same field of force (D) None of these
Last Answer : (C) Terminal velocities in the same fluid & in the same field of force
Description : Cumulative analysis for determining surface is more precise than differential analysis, because of the (A) Assumption that all particles in a single fraction are equal in size (B) Fact that screening is more ... all particles in a single fraction are equal in size, is not needed (D) None of these
Last Answer : (C) Assumption that all particles in a single fraction are equal in size, is not needed
Description : In classification, particles are said to be equal settling, if they have the same terminal velocities in the (A) Different fluids (B) Same fluid (C) Same field of force (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Pick out the wrong statement. (A) Cumulative analysis for determining surface area is preferred over differential analysis, because of the assumption that "all particles in a simple fraction equal in size" is ... throwing of the balls through the air to the toe of the heap is called 'cataracting'
Last Answer : (C) Capacity of crusher in choke feeding is increased
Description : For motion of spherical particles in a stationary fluid, the drag coefficient in hindered settling compared to that in free settling is (A) More (B) Less (C) Equal (D) More or less, depending on the type of particle
Last Answer : (A) More
Description : When the seepage pressure becomes equal to the pressure due to submerged weight of a soil, the effective pressure is reduced to zero and the soil particles have a tendency to move up in the direction of flow. ... known (A) Quick condition (B) Boiling condition (C) Quick sand (D) All the above
Description : When considering visible light cured composites, which of the following statements is incorrect? A. An air-inhibited layer is present superficially on the composite. B. The wavelength of the light which affects ... composite. (smaller particles absorb more light) D. B and C E. All are true
Last Answer : E. All are true
Description : The amplitude of a wave is ______. (i) the distance the wave moves in one second (ii). the distance the wave moves in one time period of the wave (iii) the maximum distance moved by the medium particles on either side of the mean position* (iv) the distance equal to one wave length
Last Answer : iii) the maximum distance moved by the medium particles on either side of the mean position*
Description : If the enthalpy of vaporisation of water is `186.5 J mol^(-1)`, then entropy of its vaporisation will be
Last Answer : If the enthalpy of vaporisation of water is `186.5 J mol^(-1)`, then entropy of its vaporisation will be A. `0.5 ... (-1)` D. `2.0KJK^(-1)"mole"^(-1)`
Description : The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or "outgassed" adsorbent to from a definite concentration of adsorbate is called its (A) Integral heat of adsorption (B) Heat of wetting (C) Differential heat of adsorption (D) Heat of normal condensation
Last Answer : (A) Integral heat of adsorption
Description : Assign the reason for the following: (a) Enthalpy of fusion of water is higher as compared to the hydrides of Sulphur & Selenium. (b) Water is quite stable and does not dissociate in to its elements even at high temperature.
Last Answer : Ans-a) Due hydrogen bond it has high latent heat of fusion b) Water is a stable compound and its decomposition is not thermodynamically feasible
Description : Enthalpy of a gas depends upon its (A) Temperature (B) Mass (C) Volume (D) Pressure
Last Answer : (A) Temperature
Description : Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and ... of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions
Last Answer : (D) Maximum work is done under reversible conditions
Description : If a solid is compressed adiabatically in its elastic range, its __________ remains constant (A) Internal energy (B) Enthalpy (C) Entropy (D) Temperature
Last Answer : (C) Entropy
Description : A system having a rigid boundary that energy, work and mass does not cross its boundaries a. Specific Heat b. Specific Gravity c. Isolated System d. Enthalpy
Last Answer : Isolated System
Description : _____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave. a. Entrophy b. Enthalpy c. Specific Heat d. None of the above
Last Answer : Entrophy
Description : Steam is throttled to 0.1 MPa with 20 degrees of superheat. (a) What is the quality of throttled steam if its pressure is 0.75 MPa (b) What is the enthalpy of the process? a) 97.6%,2713 kJ/kg b) -97.6%, 2713 kJ/kg c) 87.6%,3713 kJ/kg d) -87.6%, 3713 kJ/kg
Last Answer : 97.6%,2713 kJ/kg
Description : What is defined as the sum of the system’s internal energy and the product of its pressure and volume? a. Entropy. b. Enthalpy. c. Free energy. d. Potential energy.
Last Answer : b. Enthalpy.
Description : Define enthalpy of steam with its unit.
Last Answer : Enthalpy of dry saturated steam. It is the quantity of heat required to raise the temperature of 1 kg of water from the freezing point to the boiling point and then convert it into dry saturated steam at that temperature and pressure. Unit: kJ/kg