Which is true about Zn-Cu galvanic cell ?
Which is true about Zn-Cu galvanic cell ?
Oxidation occurs at cathode | |
Anode is negatively charged | |
Reduction occurs at anode | |
K+ ion transfer from salt bridge to left beaker of ZnSO4 |
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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Which is true about Zn-Cu galvanic cell ?
Oxidation occurs at cathode | |
Anode is negatively charged | |
Reduction occurs at anode | |
K+ ion transfer from salt bridge to left beaker of ZnSO4 |
Which is the unit of (K) rate constant for zero order reaction ?
s-1 | |
mol dm-3 s-1 | |
mol-2 dm6 s-1 | |
mol-1 dm3 s-1 |
Which is the strongest acid ?
HCIO2 | |
HCIO4 | |
HCIO3 | |
HCIO |
Which is the paramagnetic oxide of chlorine ?
ClO2 | |
all | |
Cl2O7 | |
Cl2O6 |
Which is sold as fertilizer ----------?
Ca3(PO4)2 | |
Na2SiO3 | |
CaSiO3 | |
MnSiO3 |
Which is not related pair of term used in analytical techniques--------?
Sublimate sublimation | |
Drying desiccator | |
Filtrate residue | |
Separating funnel mother liquor |
Which is not a sublime material--------?
Ammonium chloride | |
Iodine | |
Potash alum | |
Benzoic acid |
Which is methyl cyanide---------?
CH2 = CH – CN | |
CH3NH2 | |
CH3CN | |
CH3NO2 |
Which is fused cyclic aromatic compound -----------?
diphenyl methane | |
biphenyl | |
naphthalene | |
diphenyl amine |
Which is carnalite--------?
NaCI | |
KCI MgCl2 6H2O | |
Na2CO3. 10H2O | |
KCI |
Which is artificial manmade fiber?
None of these | |
Saffron | |
Rayon | |
Boron |
Which ion will have maximum value of heat of hydration ?
A1+3 | |
Mg+2 | |
Ba+ | |
Cs+ |
Which has the minimum freezing point ?
One Molal NaCI | |
One molal urea solution | |
One molal CaCI2 | |
One molal KCI solution |
Which has strongest bonding in the solid state ?
Hydrogen Chloride (HCI) | |
Xenon(Xe) | |
Sodium Chloride (NaCI) | |
Chlorine (Cl2) |
Which has maximum oxidation number ?
N | |
Cr | |
S | |
Mn |
Which group contains elements that exist as monoatomic molecule?
1 | |
2 | |
18 | |
14 |
Which gas is used for artificial ripening of green fruit ?
Ethylene | |
Carbon dioxide | |
Ethane | |
Acetylene |
Which element was not known when Mendeleev proposed his classification ?
Copper | |
Hydrogen | |
Sodium | |
Germanium |
Which element is necessary for normal leaf development ?
Ca | |
Si | |
Ba | |
Mg |
Which element has same isotopes like palladium----------?
Nickel | |
Tin | |
Calcium | |
Cadmium |
Which element can form tripositive ion ?
Silicon | |
Beryllium | |
Aluminium | |
Carbon |
Which electronic configuration corresponds to an element of group IIIA ?
1s2 2s2 2p6 3s2 3p1 | |
1s2 2s2 2p4 | |
1s2 2s2 2p3 | |
1s2 2s2 2p6 3s2 3p6 4s2 3d1 |
Which discovery caused a revision in the periodic law as stated by Mendeleev ?
Location of nucleus by Rutherford | |
X-rays by Roentgen | |
Atomic number by Moseley | |
Natural radioactivity by Henry Bacquerel. |
Which C-X bond has the highest bond energy per mole ?
C-C | |
C-Br | |
C-F | |
C-I |
Which compound will readily undergo sulphonation ?
Chlorobenzene | |
Nitro benzene | |
Benzene | |
Toluene |