MCQ 511 MarkThe green vitriol is:✓$ FeSO_{4} \cdot 7H_{2}O $B$ CuSO_{4} \cdot 5H_{2}O $C$ CaSO_{4} \cdot 2H_{2}O $DNone of theseAnswerCorrect option: A. $ FeSO_{4} \cdot 7H_{2}O $AView full question & answer→
MCQ 521 MarkThe chief source of helium is:AAirBRadium✓MonaziteDWaterAnswerCorrect option: C. MonaziteCView full question & answer→
MCQ 531 MarkSodium is a member of which group in Periodic table?✓Group IBGroup IICGroup IVDNone of theseAnswerCorrect option: A. Group IAView full question & answer→
MCQ 541 Mark$ H_{2}SO_{4} $ is:✓AcidBAshCAlkaliDSaltAnswerCorrect option: A. AcidAView full question & answer→
MCQ 551 MarkWhich of the following hydride is most stable?A$ AsH_{3} $B$ SbH_{3} $C$ PH_{3} $✓$ NH_{3} $AnswerCorrect option: D. $ NH_{3} $DView full question & answer→
MCQ 561 MarkThe true statement for the acid of phosphorus, $ H_{2}PO_{2} $, $ H_{3}PO_{3} $ and $ H_{3}PO_{4} $ is:AThe order of their acidity is $ H_{3}PO_{4} > H_{3}PO_{3} > H_{3}PO_{2} $BAll are reducing in natureCAll are tribasic acids✓The geometry of phosphorus is tetrahedral in all of theseAnswerCorrect option: D. The geometry of phosphorus is tetrahedral in all of theseDView full question & answer→
MCQ 571 MarkThe number of hydrogen atoms attached with phosphorus:A$0$✓2C1D3AnswerCorrect option: B. 2BView full question & answer→
MCQ 581 MarkThe hybridisation of Fe in $ K_{4}[Fe(CN)_{6}] $ is:A$ dsp^{2} $B$ sp^{3} $C$ d^{2}sp^{3} $✓$ sp^{3}d^{2} $AnswerCorrect option: D. $ sp^{3}d^{2} $DView full question & answer→
MCQ 591 MarkThe compound which is molecular in gas phase but ionic in solid phase is:✓$ PCl_{5} $B$ CCl_{4} $C$ PCl_{3} $D$ POCl_{3} $AnswerCorrect option: A. $ PCl_{5} $AView full question & answer→
MCQ 601 Mark$ PCl_{5} $ is found but $ NCl_{5} $ is not because:✓Absence of d-orbit in nitrogenBNCl5 is unstableCN2 is inertDNone of theseAnswerCorrect option: A. Absence of d-orbit in nitrogenAView full question & answer→
MCQ 611 Mark$ H_{3}BO_{3} $ is:✓Monobasic and weak Lewis acidBMonobasic and weak Bronsted acidCMonobasic and strong Lewis acidDTribasic and weak Bronsted acidAnswerCorrect option: A. Monobasic and weak Lewis acidAView full question & answer→
MCQ 621 MarkWhich inert gas show abnormal behaviour on liquifaction?AXe✓HeCArDKrAnswerCorrect option: B. HeBView full question & answer→
MCQ 631 MarkWhich inert gas is most reactive?AHeBNe✓XeDArAnswerCorrect option: C. XeCView full question & answer→
MCQ 641 MarkWhich forms coloured salt?A$ Cu^{+} $B$ Zn^{2+} $C$ Ag^{+} $✓$ Fe^{3+} $AnswerCorrect option: D. $ Fe^{3+} $DView full question & answer→
MCQ 651 Mark$ F_{2} $ is formed by reacting of $ K_{2}MnF_{6} $ with:A$ SbF_{5} $B$ MnF_{3} $✓$ KSbF_{6} $D$ MnF_{5} $AnswerCorrect option: C. $ KSbF_{6} $CView full question & answer→
MCQ 661 MarkTribasic acid is:✓$ H_{3}PO_{4} $B$ H_{3}PO_{3} $C$ H_{3}PO_{2} $D$ HPO_{3} $AnswerCorrect option: A. $ H_{3}PO_{4} $AView full question & answer→
MCQ 671 MarkWhich of the following has maximum ionisation potential?AAl✓PCSiDMgAnswerCorrect option: B. PBView full question & answer→
MCQ 681 MarkCompounds of Boron shows Lewis acid behaviour due to their:AAcidic natureBCovalent natureCIonisation nature✓Electron deficient natureAnswerCorrect option: D. Electron deficient natureDView full question & answer→
MCQ 691 MarkWhich element is kept in water?✓PBNaCSDSiAnswerCorrect option: A. PAView full question & answer→
MCQ 701 MarkGraphite is a good conductor because it has:ABonding electrons✓Moving electronsCStrong C-C bondDStrong C=C bondAnswerCorrect option: B. Moving electronsBView full question & answer→