The specie which donates electrons to central metal atom in coordination sphere is called----------?
The specie which donates electrons to central metal atom in coordination sphere is called----------?
anion | |
cation | |
acid | |
Ligand is positively charged |
پاک اسٹڈی لائبریری اپنی خدمات کو بہتر کرنے کے لئے نئے سوفٹ وئیر انسٹال کررہی ہے ۔ اس لئے آئندہ کچھ دن آپ کو کچھ صفحات تک رسائی میں مشکلات کا سامنا ہوسکتا ہے ۔ جس کے لئے ہم معذرت خواہ ہیں۔
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The specie which donates electrons to central metal atom in coordination sphere is called----------?
anion | |
cation | |
acid | |
Ligand is positively charged |
The soul of chemistry is dealing with------?
Composition of matter | |
Properties of matter | |
Internal structural changes in matter | |
Composition and properties of matter |
The solvent or mixture of solvents used for separation of compounds is called----------?
Mobile phase | |
Stationary phase | |
Dynamic phase | |
Static phase |
The solution which distils over with change in composition--------?
zeotropic solution | |
ideal solution | |
a | |
non-ideal solution |
The solution remaining after the formation of crystals is called ----------?
Dilute solution | |
Residue | |
Mother liquor | |
both A & B |
The solid which is left over the filter paper as a result of filtration---------?
crystals | |
Insoluble particles | |
mud | |
residue |
The solid particles only posses-----------?
Translational motion | |
Rotational motion | |
Vibrational motion | |
All of above motions |
The sequence of zones in the rotary kiln are as----------?
dry zone burning zone decomposition zone cooling zone | |
dry zone decomposition zone burning zone cooling zone | |
burning zone cooling zone decomposition zone | |
cooling zone burning zone decomposition zone dry zone |
The scientist who did not contribute in the construction of periodic table ?
Democritus | |
Al-Razi | |
Moseley | |
Dobereiner |
The science of fermentation is called ---- ?
Zygology | |
Zymology | |
Zootaxy | |
Zymurgy |
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer---------?
Volatile solid | |
All | |
Gas | |
Liquid |
The resonance energy of benzene is---------?
250.5 kJ/mol | |
150.5 Cal/mol | |
250.5 Cal/mol | |
150.5 kJ/mol |
The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called---------?
Extract | |
Filterate | |
Mother liquor | |
Molasses |
The relatively high energy of the gauche conformation of butane is primarily associated with-----?
Angle strain | |
Orbital strain | |
Steric strain | |
Torsional strain |
The relative lowering of vapour pressure is-----------?
both B & C | |
equal to the mole fraction of solvent | |
equal to the mole fraction of solute | |
directly proportional to the mole fraction of solute |
The relative lowering of vapour pressure is directly proportional to molality if the solution is--------?
dilute | |
saturated solution | |
concentrated | |
all of the above |
The relative attraction of the nucleus for the electrons in a chemical bond is called ---------?
Electro negativity | |
None of the above | |
Electron affinity | |
Ionization energy |
The relationship between energy of a photon of light and its frequency is given by--------?
Plancks Quantum theory | |
Bohrs model | |
Rutherfords atomic model | |
de-Broglie duel nature of matter |
The reduction potential Zn is---------?
-0.76 | |
-0.55 | |
0.55 | |
0.76 |
The rectified spirit is--------?
12% alcohol | |
95% alcohol | |
100% alcohol | |
90% alcohol |
The rectified spirit contains--------?
90% alcohol | |
100% alcohol | |
95% alcohol | |
12% alcohol |
The reciprocal of the coefficent of viscosity is called-----?
Specific gravity | |
Absorbance | |
Density | |
Fluidity |
The reaction of Lucas reagent is the fastest with-----?
D. (CH3)3COH | |
(CH3)2CHOH | |
CH3(CH2)OH | |
CH3CH2OH |
The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called ---------?
hydrolysis | |
saponification | |
neutralization | |
esterification |
The rate of reaction----------?
Decreases as the reaction proceeds | |
Increases as the reaction proceeds | |
May decrease or increase as the reaction proceeds | |
Remains the same as the reaction proceeds |