Chemistry - Mock Test 24

Question 231

Electrolyte among following is ?

A) NaOH B) urea C) glucose D) benzene

---

No Details

Question 232

Electrochemical cells convert ?

A) mechanical energy in to electrical energy B) potential energy in to electrical energy C) kinetic energy in to electrical energy D) chemical energy in to electrical energy

---

No Details

Question 233

Conditions for good electroplating are ?

A) high current density B) low temperature C) high concentration of metal in electrolyte D) all of above

---

No Details

Question 234

Lead and Zinc metals occur naturally as ?

A) oxides B) sulphite ores C) carbon ores D) chloride ores

---

No Details

Question 235

Oxidation-reduction reaction involves ?

A) transfer of neutrons B) transfer of protons C) transfer of electrons D) none of above

---

No Details

Question 236

As compare to iron, aluminum has ?

A) higher tendency to oxidize B) less tendency to oxidize C) equal tendency to oxidize D) none of above

---

No Details

Question 237

An electrochemical cell is also called ?

A) battery cell B) galvanic cell C) cell D) chargeable cell

---

No Details

Question 238

In a dry cell anode is made up of ?

A) zinc B) calcium C) sodium D) graphite

---

No Details

Question 239

Elements whose oxidation number is increased are ?

A) reduced B) hydrogenated C) oxidized D) none of above

---

No Details

Question 240

Loss of hydrogen atoms by an element is called ?

A) hydrogenation B) oxidation C) reduction D) sublimation

---

No Details