Chemical composition of cinnabar is____________________?
A. FeS2
B. HgS
C. PbS
D. ZnS
Diagnostic Test
Which one is not the use of silicones________________________?
Which one is not the use of silicones________________________?
A. Lubricant
B. Water repellent film
C. Rubber sheet
D. Medicine
Keeping in view the size of atom which is in correct order___________________?
Keeg in view the size of atom which is in correct order___________________?
A. Mg > Sr
B. Ba > Mg
C. Lu > Ce
D. CI > 1
Nitrates of which pair gives different products on thermal decomposition___________________?
Nitrates of which pair gives different products on thermal decomposition___________________?
A. Na K
B. Mg Ca
C. Li Na
D. Li Ca
Which is true about Zn-Cu galvanic cell ?
Which is true about Zn-Cu galvanic cell ?
A. Reduction occurs at anode
B. K+ ion transfer from salt bridge to left beaker of ZnSO4
C. Oxidation occurs at cathode
D. Anode is negatively charged
Stronger is the oxidizing agent greater is the___________________?
Stronger is the oxidizing agent greater is the___________________?
A. Oxidation potential
B. Redox potential
C. e.m.f of cell
D. standard reduction potential
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?
A. 8
B. 5.1
C. 6
D. one/fifty one
For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?
For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?
A. N2+3H2 2NH3
B. H2+I2 2HI
C. 2NO2 N2H4
D. PCI5 PCI3+CI2
Atomic radius can be determined by_________________?
Atomic radius can be determined by_________________?
A. X – ray diffraction
B. Spectrophotometer
C. Optical microscope
D. Electron microscope
Bohrs model is contradicted by__________________?
Bohrs model is contradicted by__________________?
A. Plancks theory
B. Dual nature of matter
C. Heisenbergs uncertainty principle
D. All of these