- Molten NaCl
- NaCl crystal
- dil. solution of NaCl in water
- consolution of NaCl in water
Category: Past Papers MCQs
| No. | Topics. | No. | Topics. |
|---|---|---|---|
| 1. | Biology mcqs | 2. | Chemistry mcqs |
| 3. | General Knowledge mcqs | 4. | Pak Studies |
| 5. | Physics mcqs |
- 1–butene
- Trans–2–butene
- Cis–2–butene
- Propene
- magnetite
- cassiterite
- malachite
- pyrolusite
- Its molecules are smaller in size.
- There is a negligible force between its molecules.
- It solidifies.
- Its temperature is above 0°.
- The electrons are shared between atoms
- The bond is non-directional
- The strength of the bond depends upon the extent of overlapping
- The bond formed may or may not be polar
- body centred cubic
- simple cubic
- face centred cubic
- all of the above
- oxytocin
- insluln
- both and (
- ribose
- Na → Na+ + e–
- Ca+ → Ca++ + e–
- K+ → K+ ++ e–
- C2+ → C3+ + e–
- Equivalent to the partial pressure of the wet gas.
- Lesser than the wet gas.
- Greater than the wet gas.
- None of these.
- 3s-orbital is lower in energy than 3p-orbital
- 3p-orbital is lower in energy than 3d-orbital
- 3s and 3p orbitals arc of lower energy than 3d orbital
- 3s, 3p and 3d orbitals all have the same energy
- Cathode is positive terminal in an electrolytic cell
- Cathode is negative terminal in an galvanic cell
- Reduction occurs at cathode in either of the cells
- Oxidation occurs at cathode in either of the cells
- NaHCO³ on heating gives Na²CO³
- Pure sodium metal dissolves in liquid ammonia to give blue solution
- NaOH reacts with glass to give sodium silicate
- Aluminium reacts with excess NaOH to give Al(OH)3
- I.E.1 of O is lower than that of N but I.E.2 O is higher than that of N
- The enthalpy of N to gain an electron is almost zero but of P is 74.3 kJ mol-1
- isoelectronic ions belong to the same period
- The covalent radius of iodine is less than its Van der Waal’s radius
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