Vapour pressure is not affected by--------?
Vapour pressure is not affected by--------?
atmospheric pressure | |
temperature | |
Surface area | |
intermolecular forces |
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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Vapour pressure is not affected by--------?
atmospheric pressure | |
temperature | |
Surface area | |
intermolecular forces |
Vander Waals forces are stronger in--------?
Br2 | |
Cl2 | |
F2 | |
I2 |
Urea as a fertilizer contains:------?
57% N | |
53% N | |
46% N | |
73% N |
Upto ---------- C atoms alkanes are gases?
6 | |
4 | |
2 | |
3 |
Unpaired electron in a molecule gives ------- character ?
Diamagnetism | |
Paramagnetic | |
Both A & B | |
Ferromagnetic |
Unit of rate of reaction is---------?
Moles dm-3 | |
Mol-1 dm3 sec-1 | |
Moles dm-3 sec-1 | |
Moles sec-1 |
Unit of Kc is--------?
moles-2dm+6 | |
moles2dm+6 | |
Kc may or may not have units | |
moles+2dm-6 |
Unit of dipole moment is---------?
Newton | |
Pascal | |
Poise | |
Debye |
Under what conditions the gases deviate from the ideal behavior ?
Low temperature | |
B and C | |
High temperature | |
High pressure |
True increasing order of acidity of the oxides of Mn is---------?
MnO2 > MnO > Mn2O7 | |
Mn2O7 > MnO2 > MnO | |
MnO < MnO2 < Mn2O7 | |
MnO2 > Mn2O7 > MnO |
Triglycerides are easily hydrolyzed by enzymes called---------?
Hydrolases | |
Lyases | |
Lipases | |
Ligases |
Treatment of sucrose with conc. HNO3 gives-----?
Glucose+ fructose | |
Laevulinic acid | |
Nitrosucrose | |
Oxalic acid |
Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is---------?
condensation polymerization | |
oxidation | |
elimination | |
additional polymertization |
Transition elements, in general, exhibit the following properties, except one. Name that property?
Formation of alloys | |
Natural Radioactivity | |
Tendency to form complexes | |
Variable oxidation state |
Traffic policemen on duty at busy street crossings during heavy traffic rush hours are advised to use:-----?
Oxygen tank | |
Hydrogen tank | |
None of these | |
Nitrogen tank |
Tincal is a mineral of----------?
. Si | |
C | |
A1 | |
B |
Three quantum number have been derived from equation of----------?
Plancks | |
Schrodinger | |
Heisenberg | |
de-Broglie |
Three elements needed for the healthy growth of plants are---------?
N K C | |
N Ca P | |
N S P | |
N P K |
The yellow colour in photochemical smog is due to presence of---------?
chlorine gas | |
nitrogen dioxide | |
dinitrogen oxide | |
chlorine dioxide |
The word Alkali means---------?
Ashes | |
Base | |
Basic salt | |
Spirit |
The weight of a metal of equivalent of 12 which will give 0.475g of its chloride is----?
0.18g | |
0.12g | |
0.24g | |
0.16g |
The weakest (in strength) of the following intermolecular forces is--------?
Vander Waals force | |
Ionic bond | |
Hydrogen bonding | |
Forces among the polar molecules |
The volume strength of 1.5 N H2O2 solution is----?
4.8 | |
5.2 | |
8.8 | |
8.4 |
The volume occupied by 2.8 g of N2 at STP-----------?
1.12 dm3 | |
112 dm3 | |
22.4 dm3 | |
2.24 dm3 |
The volume occupied by 1.4g CO at S.T.P is----------?
2.24 dm3 | |
1.12 cm3 | |
22.4 dm3 | |
1.12 dm3 |