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