InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Aqueous solution of nickel sulphate on treating with pyridine and then adding a solution of sodium nitrite gives dark blue crystals ofA. ` [Ni (py)_4]SO_(4)`B. `[Ni(py)_(2)(NO_(2))_(2)]`C. `[Ni(py)_(4)](NO_(2))_(2)`D. `[Ni(py)_(3)(NO_(2))]_(2)SO_(4)` |
| Answer» Correct Answer - C | |
| 52. |
Carbon and oxygen form two compounds. Carbon content in one of them is 42.9% and in the others is 27.3%. The given data is in agreement withA. law of conservation of massB. law of multiple proportionsC. law of reciprocal proportionsD. law of definite proportions |
| Answer» Correct Answer - B | |
| 53. |
Free energy change for a reversible process isA. `gt0`B. `lt0`C. equal to zeroD. unpredictable |
| Answer» Correct Answer - C | |
| 54. |
Which of the following is sparingly soluble in water?A. `BeSO_(4)`B. `MgSO_(4)`C. `CaSO_(4)`D. `BaSO_(4)` |
| Answer» Correct Answer - C | |
| 55. |
Two members of a homologous series have differentA. general formulaB. molecular weightsC. methods of preparationD. chemical properties. |
| Answer» Correct Answer - B | |
| 56. |
Copper is extracted from copper pyrites ore by heating in a blast furnace. The method is based on the principal thatA. copper has more affinity for oxygen than sulphur at high temperature.B. iron has more affinity for oxygen than copper at high temperature.C. sulphur has less affinity for oxygen at high temperatureD. copper has less affinity for oxygen than sulphur at high temperature. |
| Answer» Correct Answer - B | |
| 57. |
In electrorefining the impure metal is madeA. anodeB. cathodeC. anode or cathodeD. electrolyte |
| Answer» Correct Answer - A | |
| 58. |
`CH_(3)CHO+HCHOoverset("dil. NaOH")underset("Heat")rarrAoverset("HCN)underset(H_(3)O^(+))rarrB` the structure of compound B isA. `CH= CH - underset(OH) underset(|)CH- COOH`B. ` CH_(2) = CH- underset(CN) underset(|)CH - OH`C. ` CH_(3)CH_(2) - underset(OH) underset(|) CH - COOH`D. `CH_(3)- underset(OH) underset(|)CH- COOH` |
| Answer» Correct Answer - A | |
| 59. |
Which one of the following ions is coloured ?A. `Sc^(3+)`B. `Ti^(4+)`C. `Zn^(2+)`D. `V^(2+)` |
| Answer» Correct Answer - D | |
| 60. |
IN the reaction, ` 2NO + CI_(2) to 2NOCI` it has been found that doubling the concentration of both the reactants increases the rate by a factor of eight but doubling the chlorine concentration alone only doubles the rate. Which of the following statements is incorrect ?A. The reaction is first order in ` CI_(2)`B. The reaction is second order in NO.C. The overall order of reaction is 2.D. The overall order of reaction is 3. |
| Answer» Correct Answer - D | |
| 61. |
Drugs which bind strongly to the active site of an enzyme and do not depend upon concentration of natural substrate are called asA. competitive inhibitorsB. non-competitive inhibitorsC. `beta`-blockers.D. `alpha`-blockers. |
| Answer» Correct Answer - B | |
| 62. |
Which of the following cannot show linkage isomerism?A. `NO_(2)^(-)`B. `SCN^(-)`C. `CN^(-)`D. `NH_(3)` |
| Answer» Correct Answer - D | |
| 63. |
Tincture of iodine isA. aqueous solution of ` I_(2)`B. alcoholic solution of `I_(2)`C. solution of ` I_(2)` in aqueous KID. aqueous solution of KI |
| Answer» Correct Answer - B | |
| 64. |
Which statement is false?A. Elements of VB group are transition elements.B. elements of VA group are alll metalloidsC. elements of IA and IIA groups are metalsD. element of IVA group are neither strongly electronegative nor strongly electropositive. |
| Answer» Correct Answer - B | |
| 65. |
Which of the following orbital overlapping is not possible according to VBT?A. B. C. D. All of these |
| Answer» Correct Answer - D | |
| 66. |
Match the column I with column II and mark the appropriate choice. A. `Atoii,Btoiv,Ctoiii,Dtoi`B. `Atoiv,Btoiii,Ctoi,Dtoiii`C. `Atoiiii,Btoi,Ctoiv,Dtoii`D. `Atoi,Btoiii,Ctoii,Dtoiv` |
| Answer» Correct Answer - C | |
| 67. |
For `H_(3)PO_(3)` and `H_(3)PO_(4)` the correct choice isA. `H_(3)PO_(3)` is dibasic and reducingB. `H_(3)PO_(3)` is dibasic and non-reducingC. `H_(3)PO_(4)` is tribasic and reducingD. `H_(3)PO_(3)` is tribasic and non-reducing. |
| Answer» Correct Answer - A | |