Description : Which of the following VIA group element has maximum catenation capacity
Last Answer : Which of the following VIA group element has maximum catenation capacity A. S B. O C. Se D. Te
Description : The element having maximum tendency of catenation (catenation - Self linking prop- erty)?
Last Answer : Carbon
Description : Which element of Group 14 exhibits maximum tendency for catenation?
Last Answer : Ans. Carbon
Description : Name the element of group 14 which exhibits maximum tendency for catenation?
Last Answer : Ans –Carbon.
Description : Catenation is a property of the carbon atom which describes its ability to (a) bond with other carbon atoms (b) form double and triple bonds (c) exist in plant and animal form (d) form bonds in its ground state
Last Answer : bond with other carbon atoms
Description : Assertion:Among chalcogens, catenation tendency is maximum for sulphur Reason: S-S bond is stronger than O - O single bond.
Last Answer : Assertion:Among chalcogens, catenation tendency is maximum for sulphur Reason: S-S bond is stronger ... is not correct and Statement-II is correct
Description : what do you mean by Catenation? Why does ‘C’ show the property of catenation to maximum extent?
Last Answer : Ans. It is the phenomenon of an atom to form a strong covalent bond with the atom of itself .Carbon shares the property of catenation to maximum extent because it is small and can form multiple bond to itself.
Description : Give reason for the following observation (L-III) (a)- The tendency for catenation decreases down the group in group 14 (b)- The decreasing stability of+3 oxidation state with increasing atomic no. in group 13. (c)- Molten aluminum bromide is a poor conductor of electricity.
Last Answer : Ans. -(a) it is due to decrease in bond dissociation energy which is due to increase in atomic size C-C > Si-Si >Ge-Ge>Sn-Sn>Pb-Pb. (b)- It is due to inert pair effect. (c)- Molten AlBr3 is poor conductor of electricity because it is covalent compound.
Description : What is meant by catenation?
Last Answer : The unique ability of carbon to form bonds with other atoms of carbon is called catenation.
Description : The property of catenation is predominant in
Description : Define the phenomenon resonance.
Last Answer : When a molecule is represented by two or more nearly equal structures, which differ in the arrangement of electrons, then the molecule is said to exhibit resonance.
Description : The phenomenon by which the same element exists in the same physical state in different forms is known as?
Last Answer : Allotropy
Description : The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element. (A) Silicon (B) Carbon (C) Phosphorous (D) Chromium
Last Answer : Option B
Description : A DNA element which has the ability to move from one chromosomal position to another
Last Answer : Ans. Jumping gene
Description : The phenomenon of inhibition of glycolysis by O2 is termed as (A) Red drop (B) Pasteur effect (C) Michaelis effect (D) Fischer’s effect
Last Answer : Answer : B
Description : Tissues form lactic acid from glucose. This phenomenon is termed as (A) Aerobic glycolysis (B) Oxidation (C) Oxidative phosphorylation (D) Anaerobic glycolysis
Last Answer : D
Description : The phenomenon of osmosis is opposite to that of (A) Diffusion (B) Effusion (C) Affusion (D) Coagulation
Last Answer : A
Description : What is the element in third series the element with maximum oxidation state ?
Last Answer : Mn – manganese -+7-oxidation state
Description : Strength of a shaft a. Is equal to maximum shear stress in the shaft at the time of elastic failure b. Is equal to maximum shear stress in the shaft at the time of rupture c. Is equal to torsional rigidity d. Is ability to resist maximum twisting moment
Last Answer : d. Is ability to resist maximum twisting moment
Description : The Modulus of Elasticity for a material refers to: w) the ability of a material to resist corrosion x) the ratio of stress over strain y) the maximum load over the cross sectional area z) none of the above
Last Answer : ANSWER: X -- THE RATIO OF STRESS OVER STRAIN
Description : Bohr effect is (A) Shifting of oxyhemoglobin dissociation curve to the right (B) Shifting of oxyhemoglobin dissociation curve to the left (C) Ability of hemoglobin to combine with O2 (D) Exchange of chloride with carbonate
Last Answer : Answer : A
Description : If DNA of a cancer cell is introduced into a normal cell, the recipient cell (A) Destroys the DNA (B) Loses its ability to divide (C) Dies (D) Changes into a cancer cell
Last Answer : Answer : D
Description : The essential amino acids (A) must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids (B) must be supplied in the diet because the ... amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements
Description : Urea clearance test is used to determine the (A) Glomerular filtration rate (B) Renal plasma flow (C) Ability of kidney to concentrate the urine (D) Measurement of tubular mass
Description : The ability of liver to remove a dye like BSP from the blood suggests a normal (A) Excretory function (B) Detoxification function (C) Metabolic function (D) Circulatory function
Description : Living cells have the unique ability to synthesize only _________ the form of optical isomer due to _________. (A) ‘d’ form, stereospecific enzymes (B) ‘l’ form stereospecific enzymes (C) ‘d’ form, DNA (D) ‘L’ form, DNA
Description : The essential amino acids (A) Must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids (B) Must be supplied in the diet because the ... amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements
Description : Reducing ability of carbohydrates is due to (A) Carboxyl group (B) Hydroxyl group (C) Enediol formation (D) Ring structure
Description : The ability of the cell membrane to act as a selective barrier depends upon (A) The lipid composition of the membrane (B) The pores which allows small molecules (C) The special mediated transport systems (D) All of these