Free Transition Elements MCQs with Answers

• A. Binding energy
• B. Covalent radius
• C. Melting point
• D. Cationic radius

Explanation: The cationic radius of transition elements does not vary with a regular pattern because the number of electrons in the outermost shell…

• A. 3
• B. 4
• C. 6
• D. 0

Explanation: The coordination number of cobalt in the complex is 6 because there are 6 ligands (3 NO2 and 3 NH3) attached to the cobalt atom.

• A. Zn, Cd, Hg
• B. Cu, Au, Ag
• C. Fe, Ru, Os
• D. Cr, Mo, w

Explanation: It is correct because these elements belong to Group IB of the transition elements.

• A. Number of electron pairs
• B. Number of unpaired electrons
• C. Number of Neutrons
• D. Number of protons

Explanation: Number of unpaired electrons is correct because the strength of binding energy in transition elements primarily depends on the presence of…

• A. Y
• B. Sc
• C. Zn
• D. Cd

Explanation: Sc (Scandium) is correct because the first transition series begins with scandium.

• A. Zn, Cd, Hg
• B. Cu, Au, Ag
• C. Fe, Ru, Os
• D. Cr, Mo, W

Explanation: Group IIB of transition elements contains Zn (Zinc), Cd (Cadmium), and Hg (Mercury).

• A. Tetrahedral
• B. Trigonal bipyramidal
• C. Octahedral
• D. Square planar

Explanation: trigonal bipyramidal, corresponds to dsp3 hybridization, where an atom has five electron groups around it, leading to a trigonal…

• A. 6
• B. 4
• C. 1
• D. 2

Explanation: The coordination number of iron in K3[Fe(CN)6] is indeed 6. In this compound, the iron ion (Fe2+) is surrounded by six cyanide ions (CN-)…

• A. Fe and Mn
• B. Fe3+ and Mn2+
• C. Fe2+ and Mn3+
• D. Fe2+ and Mn2+

Explanation: Fe3+ and Mn2+ have the highest number of unpaired electrons, which leads to stronger paramagnetic behavior compared to other options.

• A. Fe3O4
• B. Fe2O2
• C. FeO
• D. Fe(OH)2

Explanation: Magnetite is a naturally occurring iron oxide with the chemical formula Fe3O4. It is a major iron ore mineral and has magnetic properties.

• A. MnSiO
• B. MnSiO2
• C. MnSiO3
• D. Mn2SiO2

Explanation: This is the correct answer. Slag, typically formed during metal smelting or refining processes, often contains manganese silicates among…

• A. HCrO3
• B. H2CrO4
• C. HCr2O7
• D. H2CrO6

Explanation: This is chromic acid, which can be deprotonated to form chromate salts, making it the correct answer.

• A. White
• B. Red
• C. Blue
• D. Yellow

Explanation: Chromates are well-known for their characteristic yellow color, which is evident in many chromate salts.

• A. H2SO4
• B. K2SO4
• C. KMnO4
• D. H2S

Explanation: Stadeler's process is indeed used for the synthesis of potassium permanganate (KMnO4).

• A. Castings
• B. Hammer
• C. Tubes
• D. All of above

Explanation: Medium carbon steel is often used for castings because it provides good strength and hardness, making it suitable for components that need…

• A. Sulphates
• B. Dichromates
• C. Nitrates
• D. Chromates

Explanation: Dichromates, specifically potassium dichromate (K2Cr2O7), are powerful oxidizing agents.

• A. Sc3+
• B. Tc+
• C. Cu+
• D. Zn2+

Explanation: Technetium in its +1 oxidation state would have a definite value of magnetic moment due to its unpaired electron(s), while all other…

• A. Na
• B. Mg
• C. Fe
• D. Al

Explanation: Iron exhibits multiple oxidation states, including +2 (ferrous) and +3 (ferric).

• A. An acidic medium
• B. A basic medium
• C. A neutral medium
• D. It does not exist

Explanation: The equilibrium ( text{Cr}_2text{O}_7{2-} leftrightarrow 2text{CrO}_4{2-}) involves the chromate (text{CrO}_4{2-}) and dichromate (…

• A. Pig iron
• B. Steel
• C. Wrought iron
• D. Cast iron

Explanation: Steel is produced by refining pig iron in a Bessemer converter or other similar processes.