MCQOPTIONS
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MCQOPTIONS
This section includes 1262 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 951. |
Calcarious material includes_________________? |
| A. | lime stone |
| B. | marble |
| C. | chalk |
| D. | all of the above |
| Answer» E. | |
| 952. |
Which of the following processes is used for the synthesis of cement ? |
| A. | dry process |
| B. | wet process |
| C. | both |
| D. | none |
| Answer» D. none | |
| 953. |
Which set of elements is listed in order of increasing ionization energy ? |
| A. | Sb < As < S < P < Cl |
| B. | Cl < Sb < P < As < S |
| C. | As < Cl < P < S < Sb |
| D. | Sb < As < Cl < S < P |
| Answer» B. Cl < Sb < P < As < S | |
| 954. |
Which of the following is macronutrient ? |
| A. | Cu |
| B. | Cl |
| C. | H |
| D. | Zn |
| Answer» D. Zn | |
| 955. |
Which of the following is incorrect statement about nitrogen importance ? |
| A. | It enhances plant growth |
| B. | It is involved in the synthesis of protein and nucleic acids |
| C. | it accelerates fruits and flowers growth |
| D. | It is involved in the chlorophyll synthesis |
| Answer» D. It is involved in the chlorophyll synthesis | |
| 956. |
Which one of the following is an inorganic fertilizer ? |
| A. | manure |
| B. | urea |
| C. | ammonium nitrate |
| D. | All |
| Answer» D. All | |
| 957. |
Which of the following is the most suitable catalyst for ammonia synthesis ? |
| A. | Pt |
| B. | ZnO + Cr2O3 |
| C. | Fe in fused mixture of Al2O3 + SiQ2 + MgO |
| D. | All of the above |
| Answer» D. All of the above | |
| 958. |
Phosphorus helps in the growth of_________________? |
| A. | root |
| B. | leave |
| C. | stem |
| D. | seed |
| Answer» E. | |
| 959. |
The potassium present in plant help the plant to___________________? |
| A. | form starch sugar and fibrous material |
| B. | ripen the seeds and fruits |
| C. | increase the resistance against disease |
| D. | all the above statements are correct |
| Answer» E. | |
| 960. |
Which of the following will have very high rate of reaction ? |
| A. | Double decomposition reaction |
| B. | Neutralization reaction |
| C. | Ionic reactions |
| D. | all of above |
| Answer» E. | |
| 961. |
What is clinker ? |
| A. | roasted calcareous material |
| B. | roasted argillaceous material |
| C. | roasted calcareous and argillaceous material |
| D. | roasted gypsum |
| Answer» D. roasted gypsum | |
| 962. |
The sequence of zones in the rotary kiln are as____________________? |
| A. | dry zone burning zone decomposition zone cooling zone |
| B. | cooling zone burning zone decomposition zone dry zone |
| C. | burning zone cooling zone decomposition zone |
| D. | dry zone decomposition zone burning zone cooling zone |
| Answer» E. | |
| 963. |
Which one of the following raw material is not present in the cement ? |
| A. | lime stone |
| B. | gypsum |
| C. | KNO3 |
| D. | iron oxide |
| Answer» E. | |
| 964. |
Energy of reactant higher than energy of product favours A. Endothermic_______________? |
| A. | Exothermic |
| B. | Moderate reaction |
| C. | No reaction |
| D. | None of these |
| Answer» B. Moderate reaction | |
| 965. |
Radiations are absorbed in_______________? |
| A. | Spectrophotometer method |
| B. | Dilatometric method |
| C. | Optical relation method |
| D. | Refractometric method |
| Answer» B. Dilatometric method | |
| 966. |
The common name of propane 1 3-dioic is_________________? |
| A. | Oxalic acid |
| B. | Aromatic acid |
| C. | Malonic acid |
| D. | Fumaric acid |
| Answer» D. Fumaric acid | |
| 967. |
A substance which increases the reactivity of enzyme is called_________________? |
| A. | Promoters |
| B. | Inhibitors |
| C. | Stimulators |
| D. | Non-activators |
| Answer» B. Inhibitors | |
| 968. |
Energy of activation for backward reaction is less than forward reaction for ___________ reactio? |
| A. | Endothermic |
| B. | Exothermic |
| C. | Moderate |
| D. | Fast |
| Answer» B. Exothermic | |
| 969. |
An enzyme has its specificity due to________________? |
| A. | Substrate |
| B. | Structure |
| C. | Temperature |
| D. | Pressure |
| Answer» C. Temperature | |
| 970. |
Which of the following type of reaction is 3rd order reaction_________________? |
| A. | 2N2O5 = 2N2O4 + O3 |
| B. | NO + O3 ? NO2 + O2 |
| C. | 2FeCl3 + 6KI ? 2FeI2 + 6KCl + I2 |
| D. | None of these |
| Answer» D. None of these | |
| 971. |
When the reaction completes in more than one steps rate of reaction will be determined by________________? |
| A. | Fast step |
| B. | Slowest step |
| C. | All steps |
| D. | Molecularity of the reaction |
| Answer» C. All steps | |
| 972. |
Which statement is incorrect about catalyst___________________? |
| A. | it is used in smaller amount |
| B. | decrease activation energy |
| C. | specific in action |
| D. | it affects specific rate constant |
| Answer» E. | |
| 973. |
The addition of a catalyst to the reaction system__________________? |
| A. | Increases the rate of forward reaction only |
| B. | Increases the rate of reverse reaction |
| C. | Increases the rate of forward but decreases the rate of backward reaction |
| D. | Increases the rate of forward as well as backward reaction equally |
| Answer» E. | |
| 974. |
The substances that reduces the effectiveness of a catalyst are called ___________________? |
| A. | Promoters |
| B. | Poisoning catalysts |
| C. | Inhibitors |
| D. | pro-catalysts |
| Answer» C. Inhibitors | |
| 975. |
Activated complex is formed due to________________? |
| A. | Pressure |
| B. | Effective collision |
| C. | Ineffective collisions |
| D. | Temperature |
| Answer» C. Ineffective collisions | |
| 976. |
Energy required to form transition state is called _________________? |
| A. | Ea |
| B. | P.E |
| C. | V |
| D. | K.E |
| Answer» B. P.E | |
| 977. |
Greater the conc. Of reactant__________________? |
| A. | Greater will be dx/dt |
| B. | Lesser will be dx/dt |
| C. | dx/dt will be moderate |
| D. | any of above |
| Answer» B. Lesser will be dx/dt | |
| 978. |
Deuterium reacts with oxygen to form________________? |
| A. | Hard water |
| B. | Heavy water |
| C. | Soft water |
| D. | Water gas |
| Answer» C. Soft water | |
| 979. |
Elements in the same vertical group of the periodic table have same_______________? |
| A. | Number of valence electrons |
| B. | Atomic number |
| C. | Atomic mass |
| D. | Atomic volume |
| Answer» B. Atomic number | |
| 980. |
The test which is used for the identification of amino-acids is_________________? |
| A. | Ninhydrin test |
| B. | Molisch test |
| C. | Biuretic test |
| D. | Benedict test |
| Answer» B. Molisch test | |
| 981. |
Which of the p-block elements are not representative elements ? |
| A. | Alkali metals (I-A) |
| B. | Group-14 elements (IV-A) |
| C. | Group-18 elements (VIII-A) |
| D. | Halogens (VII-A) |
| Answer» D. Halogens (VII-A) | |
| 982. |
Which of the following will not form crystalline structure with opporitely charged ions_________________? |
| A. | H+ |
| B. | H- |
| C. | Mg2+ |
| D. | Ca2+ |
| Answer» B. H- | |
| 983. |
Best position of hydrogen in the periodic table is above I.A Group which is mainly due to_______________? |
| A. | Both are electropositive |
| B. | Similar outer most shell electronic configuration |
| C. | Both form ionic compounds |
| D. | All |
| Answer» E. | |
| 984. |
An element has electronic conviguration 1s2 2s2 2p2. It belongs to__________________? |
| A. | Group II-A |
| B. | Group IV-A |
| C. | Group VII-A |
| D. | Group VI-A |
| Answer» C. Group VII-A | |
| 985. |
Non-metals usually form _________________ oxides? |
| A. | Acidic |
| B. | Amphoteric |
| C. | Neutral |
| D. | All of the above |
| Answer» B. Amphoteric | |
| 986. |
Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ? |
| A. | The nature of its oxides |
| B. | The charge on its ions |
| C. | The formula of its oxide |
| D. | Its number of isotopes |
| Answer» E. | |
| 987. |
The atomic radii decreases by increasing atomic number in________________? |
| A. | Alkali metal |
| B. | Alkaline earth metal |
| C. | Elements from Li to Ne |
| D. | Halogens |
| Answer» D. Halogens | |
| 988. |
True increasing order of acidity of the oxides of Mn is_________________? |
| A. | MnO < MnO2 < Mn2O7 |
| B. | Mn2O7 > MnO2 > MnO |
| C. | MnO2 > MnO > Mn2O7 |
| D. | MnO2 > Mn2O7 > MnO |
| Answer» C. MnO2 > MnO > Mn2O7 | |
| 989. |
Which one of the following element has highest oxidation state in its compounds ? |
| A. | Cr |
| B. | Mn |
| C. | Sn |
| D. | O |
| Answer» C. Sn | |
| 990. |
The longest period in the modern periodic table is___________________? |
| A. | 6th |
| B. | 7th |
| C. | 2nd and 3rd both |
| D. | 5th |
| Answer» B. 7th | |
| 991. |
Which of the following cannot exist in solution_________________? |
| A. | O-2 |
| B. | H+ |
| C. | Cl- |
| D. | Na+ |
| Answer» B. H+ | |
| 992. |
Noble gases are named so because they are__________________? |
| A. | less reactive |
| B. | Zero group elements |
| C. | Having completely filled valence shell |
| D. | All |
| Answer» E. | |
| 993. |
Seventh period contains _________________ normal elements ? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» B. 4 | |
| 994. |
The basic hydrolysis of ethyl acetate produces__________________? |
| A. | ethanol |
| B. | acetic acid |
| C. | ethanol and acetic acid |
| D. | ethanol and sodium acetate |
| Answer» E. | |
| 995. |
Modern periodic table has been divided in ___________ blocks? |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 7 |
| Answer» C. 8 | |
| 996. |
Amphoteric exides are those which possess ____________ properties? |
| A. | Acidic |
| B. | Basic |
| C. | Acidic and basic |
| D. | Neutral and acidic |
| Answer» D. Neutral and acidic | |
| 997. |
Which discovery caused a revision in the periodic law as stated by Mendeleev ? |
| A. | Location of nucleus by Rutherford |
| B. | Atomic number by Moseley |
| C. | X-rays by Roentgen |
| D. | Natural radioactivity by Henry Bacquerel. |
| Answer» C. X-rays by Roentgen | |
| 998. |
The property which increases upto group IV-A then decreases on wards_______________? |
| A. | Ionization energy |
| B. | Atomic radii |
| C. | Melting & boiling points |
| D. | Atomic volume |
| Answer» D. Atomic volume | |
| 999. |
Which acid is the manufacture of synthetic rubber ? |
| A. | Acetic acid |
| B. | Formic acid |
| C. | Carbonic acid |
| D. | Benzoic acid |
| Answer» B. Formic acid | |
| 1000. |
Addition of 2nd electron to a uni negative ion is always____________________? |
| A. | Exothermic |
| B. | Endothermic |
| C. | Data is insufficient |
| D. | Unpredictable |
| Answer» C. Data is insufficient | |