Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary
Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids
Description : The movement of soil heat take place mainly by — a. Diffusion b. Conduction c. Mass flow d. Diurnal variation
Last Answer : b. Conduction
Description : Downward movement of food synthesized in leaves takes place through
Last Answer : Ans. Phloem
Description : Heat flow in air by process of
Last Answer : Ans. Radiation
Description : Heat flow in liquid/water by process of
Last Answer : Ans. Convection
Description : When an isolated thermodynamic system executes a process, (A) Work is done (B) Heat transfer takes place (C) Mass flow occurs across the boundary of the system (D) No chemical reaction takes place within the system
Last Answer : D) No chemical reaction takes place within the system
Description : Water is absorption by plants mainly through
Last Answer : Ans. Root hairs
Description : Upward translocation of fluid in xylem takes place due to
Last Answer : Ans. Pull of transpiration stream
Description : During Osmosis, movement of water takes place from
Last Answer : Ans. Lower to higher concentration of solution
Description : Spindle formation takes place during
Last Answer : Ans. Metaphase 1
Description : In which stage, crossing over takes place?
Last Answer : Ans. Pachytene stage
Description : Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation
Last Answer : (3) Radiation and convection only Explanation: Conduction is the transfer of heat energy by direct contact, convection is the movement of heat by actual motion of matter; radiation is the transfer of energy with the help of electromagnetic waves.
Description : Pick out the correct statement. (A) Higher is the temperature of the radiating body, higher is the wavelength of radiation (B) Logarithmic mean area is used for calculating the heat flow rate ... ) Solid angle subtended by the finite surface at the radiating element is called the angle of incidence
Last Answer : (B) Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder
Description : Cytokinin is mainly synthesized in
Last Answer : Ans. Root tips
Description : Stomata is found mainly on
Last Answer : Ans. Lower surface of leaves
Description : Nutrients absorbed by plants from soil solution are carried upward through the
Last Answer : Ans. Xylem
Description : A vertical section of soil through all its horizons
Last Answer : Ans. Soil Profile
Description : The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. ... Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly
Last Answer : (b) A : Alveolar cavity - Main site of exchange of respiratory gases
Description : A semi-solid transparent product prepared from pectin containing fruit
Last Answer : Ans. Jelly
Description : The attraction of solid surface for water molecules is called as
Last Answer : Ans. Adhesion
Description : The element which takes part in the growth and development of plants
Last Answer : Ans. Plant nutrients
Description : Plant takes the nutrient in the form of
Last Answer : Ans. Ions
Description : The maximum discharge through a circular channel takes place, when the depth of the fluid flow is __________ times the pipe diameter. (A) 0.25 (B) 0.5 (C) 0.66 (D) 0.95
Last Answer : (D) 0.95
Description : The flow of genetic material in microbial cells usually takes place from A- RNA through DNA to proteins B- proteins through RNA to DNA C- .DNA through RNA to proteins D- none of these
Last Answer : .DNA through RNA to proteins
Description : When the expansion of compression of gas takes place without transfer of heat to or from the gas the process is called a. reversible b. adiabatic c. polytropic d. isothermal
Last Answer : adiabatic
Description : When the expansion of compression of gas takes place without transfer of heat or from the gas the process is called; a. Isometric process b. Isothermal process c. Isobaric process d. Adiabatic process
Last Answer : Adiabatic process
Description : During which of the following process does heat rejection takes place in Carnot cycle? A. Isothermal expansion B. Isentropic expansion C. Isothermal compression D. Isentropic compression
Last Answer : Answer: C
Description : Change in internal energy 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 : c
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 : Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an (A) Blast furnace (B) Steam boiler (C) Salt bath furnace (D) Annealing furnace
Last Answer : (C) Salt bath furnace
Description : A biochemical process or reaction taking place in a test tube (in lab)
Last Answer : Ans. In vitro
Description : The mental process through which individual passes from fires hearing about an innovation to final adoption.
Last Answer : Ans. Adoption process
Description : The process by which an innovation is communicated through certain channels overtime among the members of a social system
Last Answer : Ans. Diffusion
Last Answer : : In transportation mode.
Description : The direction of heat flow between two objects depends on - (1) Their masses (2) Their heat contents (3) Their temperatures (4) Whether they are in solid, liquid or gaseous state
Last Answer : (3) Their temperatures Explanation: Heat always flows from a body at higher temperature to a body at a lower temperature.
Description : Forestry outside the conventional forests which primarily aim at providing continuous flow of goods and services for the benefit of people
Last Answer : Ans. Social forestry
Description : Mass flow or pressure flow theory was given by
Last Answer : Ans. Godlewski (1884)
Description : Shrinkage of protoplasm due to outward flow of water (exosmosis) in a concentrate solution.
Last Answer : Ans. Plasmolysis
Description : Lagooning process is mainly a means of the (A) Sludge disposal (B) Reduction of excessive flow in sewers (C) Biological treatment of wastes (D) None of these
Last Answer : (A) Sludge disposal
Description : Large portions of the earth with similar climate, soil, plant and animal life community is known as
Last Answer : Ans. Biosphere
Description : The soil, air and seed borne disease of wheat
Last Answer : Ans. Kernal bunt (Neovossia indica)
Description : The soil borne disease of rice
Last Answer : Ans. Sheath blight of rice (Rhizoctonia oryzae)
Description : The cause of most of the gaseous interchange in soil
Description : Which of the plant species can be suggested on saline soil?
Last Answer : Ans. Haloxylon salicornium (II) Biochemistry
Description : The crops prefer acidic soil
Last Answer : Ans. Rice, tea and potato
Description : Method used for the determination of lime requirement of an acid soil is
Last Answer : Ans. Shoemaker’s method
Description : The saline – alkali soil is also known as
Last Answer : Ans. Usar
Description : Alkaline soil is also called as
Last Answer : Ans. Solanetz and Black alkali
Description : Saline soil is also called as
Last Answer : Ans. Solan chalk and White alkali
Description : The soil, which have 8.5 indicates soil is
Last Answer : Ans. Alkaline