Practice Test

Q1) Assertion :
Nitrogen is a non-metal.
Reason :
Nitrogen has 5 valence electrons. Show Answer

Q2) Assertion :
Highly reactive metals are obtained by electrolytic reduction of their molten ore.
Reason :
Highly reactive metals can be extracted by chemical reduction. Show Answer

Q3) Which one of the following metals does not react with cold as well as hot water? Show Answer

Q4) What happens when calcium is treated with water?
(i) It does not react with water.
(ii) It reacts violently with water.
(iii) It reacts less violently with water.
(iv) Bubbles of hydrogen gas formed sick to the surface of calcium. Show Answer

Q5) Generally, non-metals are not lustrous. Which of the following non-metals is lustrous? Show Answer

Q6) An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following: Show Answer

Q7) Which among the following statements is incorrect for magnesium metal? Show Answer

Q8) Electrical wires have a coating of an insulating material. The material, generally used is Show Answer

Q9) Food cans are coated with tin and not with zinc because Show Answer

Q10) Which of the given metals is stored under kerosene to prevent oxidation? Show Answer

Q11) Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag Show Answer

Q12) Galvanization is a method of protecting iron from rusting by coating with a thin layer of Show Answer

Q13) Which of the following metals are obtained by electrolysis of their chloride in molten state?
(i) Na
(ii) Ca
(iii) Fe
(iv) Cu Show Answer

Q14) An electrolytic cell consists of
(i) positively charged cathode
(ii) negatively charged anode
(iii) positively charged anode
(iv) negatively charged cathode Show Answer

Q15) Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents ? Show Answer

Q16) Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
(i) Au
(ii) Cu
(iii) Na
(iv) K Show Answer

Q17) During electrolytic refining of zinc, it gets Show Answer

Q18) Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.
Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution. Show Answer

Q19) Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Metals are sonorous.
Reason (R): They are generally brittle in the solid state; they break into pieces when hammered. Show Answer

Q20) Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Gas bubbles are observed when sodium carbonate is added to dilute hydrochloric acid.
Reason (R) : Carbon dioxide is given off in the reaction. Show Answer

Q21) Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.
Reason (R): All ores are minerals but all minerals are not ores. Show Answer

Q22) Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Usually the sulphide ore is converted to oxide before reduction.
Reason ( R): Reduction of oxides occurs easier. Show Answer

Q23) Choose the most reactive metal: Show Answer

Q24) Which of the following will displace Cu from its solution of sulphate: Show Answer

Q25) Which is the correct decreasing order of reactivity? Show Answer

Q26) The gas produced when dil. HCl is added to a reactive metal: Show Answer

Q27) Identify A and C? Show Answer

Q28) Identify B and D which are oxides of: Show Answer

Q29) Amphoteric oxides are: Show Answer

Q30) Which of the following is amphoteric in nature? Show Answer

Q31) The reaction in which heat is generated is called as: Show Answer

Q32) Which of the following is used for dissolution of gold? Show Answer

Q33) The composition of aqua - regia is Show Answer

Q34) Which of the following in incorrect? Show Answer

Q35) Aqua regia dissolves: Show Answer

Q36) Examples of Noble metals are: Show Answer

Q37) The process of purification of the metal obtained after reduction, is called: Show Answer

Q38) Which of the metals are refined by electrolytic refining?
(i) Au
(ii) Cu
(iii) Na
(iv) K Show Answer

Q39) During electrolytic refining of zinc, it gets Show Answer

Q40) In electrolytic refining of copper, impure copper act as _____ and pure copper as ________: Show Answer

Q41) The anode is _______ and the reaction at the anode is _______. Show Answer

Q42) Which of the following correctly represents the decreasing order of metallic character of Alkali metals plotted in the graph? Show Answer

Q43) Hydrogen is placed along with alkali metals in the modern periodic table through it shows non-metallic character: Show Answer

Q44) Which of the following has highest electronegativity ? Show Answer

Q45) Identify the reason for the gradual change electrogenativity in halogens down the group. Show Answer

Q46) Which of the following reason correctly justifies that "Fluorine (72pm) has smaller atomic radius than Lithium (152pm)"? Show Answer

Q47) The metal used is: Show Answer

Q48) After completion of this reaction , a metal is obtained in the molten state. Identify the metal: Show Answer

Q49) The correct equation to justify thermite reaction is: Show Answer

Q50) The ability of metals to be drawn into thin wire is known as :
Show Answer

Q51) The compound obtained on reaction of iron with steam is / are : Show Answer

Q52) Which one of the following properties is not generally exhibited by ionic compounds ? Show Answer

Q53) Which of the following properties of aluminium are responsible for the same ?
(I) Good thermal conductivity
(II) Good electrical conductivity
(III) Ductility
(IV) High melting point Show Answer

Q54) The elements or compounds which occur naturally in the earth crust are know as : Show Answer

Q55) Silver articles become black on prolonged exposure to air. This is due to the formation of Show Answer

Q56) Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam ? Show Answer

Q57) Which one of the following metals is found in liquid state at room temperature ? Show Answer

Q58) An alloy is : Show Answer

Q59) This element is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following : Show Answer

Q60) Reactions between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z ? Show Answer

Q61) Predict the nature of the element if the electronic configurations of three elements X, Y and Z are X-2, 8, Y-2, 8, 7 and Z - 2, 8, 2 respectively ? Show Answer

Q62) What happens when calcium is treated with water ?
(I) It does not react with water.
(II) It reacts violently with water.
(III) It reacts less violently with water.
(IV) Bubbles of hydrogen gas formed stick to the surface of calcium Show Answer

Q63) Which insulating material is used for coating the electrical wires ? Show Answer

Q64) Which of the following properties are not shown in metals ? Show Answer

Q65) Aluminium foil is used for wrapping food because : Show Answer

Q66) Of these, the most ductile metal is .... Show Answer

Q67) Oxides of non-metals are : Show Answer

Q68) Metal oxides are : Show Answer

Q69) Food cans are coated with tin and not with zinc because : Show Answer

Q70) Which one of the following four metals would be displaced from the solution of its salts by other three metals ? Show Answer

Q71) Which of the following alloys contain non-metal as one of their constituents ? Show Answer

Q72) Which metal is displaced when zinc metal is put in the solution of copper sulphate ? Show Answer

Q73) Assertion :
Sodium is kept immersed in kerosene oil.
Reason :
Sodium is very reactive metal. Show Answer

Q74) Assertion :
Platinum, gold and silver are used to make jewellery.
Reason :
It is because they are very lustrous. Show Answer

Q75) Assertion :
Copper is used to make hot water tanks and not steel (an alloy of iron).
Reason :
Copper does not react with hot water. Show Answer

Q76) Assertion :
Alloys are commonly used in electrical heating devices like electric iron and heater.
Reason :
Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points than their constituent metals. Show Answer

Q77) Assertion :
Aluminium is used to make utensils for cooking.
Reason :
Aluminium is a highly reactive metal. Show Answer

Q78) Assertion :
Tungsten is used for filament of electric bulb.
Reason :
It has high melting point. Show Answer

Q79) Assertion :
Ionic compounds generally have high melting points.
Reason :
It is because they are ionic in nature. Show Answer

Q80) Assertion :
From metals school bells are made.
Reason :
Metals are sonorous. Show Answer

Q81) Assertion :
Zinc fails to evolve hydrogen gas on reacting with dilute sulphuric acid.
Reason :
It gives the NO gas on reaction with ammonia. Show Answer

Q82) Assertion :
Reactivity Series is an arrangement of element based on their reactivity.
Reason :
Reactivity Series is used to separate elements based on their reactivity. Show Answer

Q83) Three elements A, B and C have their electronic configuration as shown below :
A : 2,
Y : 2,8,7,
Z : 2,8,2
Which of the following is correct regarding these elements ? Show Answer

Q84) Element S reacts with element T to form a compound C. During the formation of compound C, atoms of S lose one electron whereas T gains one electron each. Which of the following properties is not shown by compound C ? Show Answer

Q85) The electronic configuration of sodium ion is : Show Answer

Q86) Which of the following represents an electropositive element ? Show Answer

Q87) Choose the incorrect one : Show Answer

Q88) Which among the following forms a cation ? Show Answer

Q89) Ionic compounds are soluble in which of the following ? Show Answer

Q90) Consider these statements about ionic compounds :
(I) They conduct electricity in solid-state.
(II) They conduct electricity in solutions.
(III) They conduct electricity in the molten state.
Choose the correct option : Show Answer

Q91) Which of the following can change to an anion ? Show Answer

Q92) Identify the incorrect statement - Show Answer

Q93) Some metals react vigorously with oxygen so for safety they are kept in kerosene to prevent accidental fires. Which metals are these ? Show Answer

Q94) Which of the following pairs will undergo displacement reaction : Show Answer

Q95) Identify four metals P, Q, S, T with the hints given below :
P forms basic oxides
Q forms amphoteric oxides
S oxide dissolves in water to form alkali
T does not react with water Show Answer

Q96) Food cans are coated with tin and not with zinc because : Show Answer

Q97) The metal which does not react with dilute HCl is Show Answer

Q98) Arrange the metals in the correct order of their reactivity :
Show Answer

Q99) Why does the magnesium ribbon need to be cleaned before burning it in air ? Show Answer

Q100) Although metals form basic oxides, which of the following metals form an amphoteric oxide ? Show Answer

Q101) Which of the following pairs will give displacement reactions ? Show Answer

Q102) An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be : Show Answer

Q103) Formula of cinnabar is : Show Answer

Q104) Formula cinnabar is : Show Answer

Q105) Which is the most reactive metal ? Show Answer

Q106) Which is the least reactive metal ? Show Answer

Q107) Activity series of elements is : Show Answer

Q108) Which of the following metal is least reactive : Show Answer

Q109) Decreasing order of reactivity is : Show Answer

Q110) The lightest liquid metal is Show Answer

Q111) The most abundant elements in the universe is Show Answer

Q112) In extraction of copper, the flux used is Show Answer

Q113) Which of the following represent mercury (I) ion correctly ? Show Answer

Q114) Bauxite is mixed with cryolite so as to

(i) reduce its melting point
(ii) increase its electrical conductivity
(iii) molten cryolite acts as solvent
(iv) increase its melting point Show Answer

Q115) Which of the following is purest form of carbon? Show Answer

Q116) In electrolytic refining of copper, the electrolyte used is Show Answer

Q117) Which of the following ore is concentrated by Froth floatation process? Show Answer

Q118) Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg) ? Show Answer

Q119) Generally, metals are solid in nature. Which are of the following metals is found in liquid state at room temperature ? Show Answer

Q120) Which of the following metals are obtained by electrolysis of their chlorides in molten state?
(i) Na
(ii) Ca
(iii) Fe
(iv) Cu Show Answer

Q121) Which of the following alloys contain mercury as one of their constituents ?
Show Answer

Q122) Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z? Show Answer

Q123) The electronic configurations of three elements X, Y and Z are X-2, 8 ; Y-2, 8, 7 and Z-2,8, 2. Which of the following is correct ? Show Answer

Q124) Which of the following can undergo a chemical reaction ? Show Answer

Q125) Which one of the following figures correctly describes the process of electrolytic refining ? Show Answer

Q126) When a strip of copper metal is placed in iron(II) sulphate solution, then red-brown copper metal is formed. Show Answer

Q127) When zinc is added to a solution of iron(II) sulphate, then the greenish colour of iron sulphate solution fades gradually due to the formation of colourless zinc sulphate solution and iron is deposited on zinc. Show Answer

Q128) A negatively charged ion is known as cation. Show Answer

Q129) The electronic configuration of sodium ion is the same as that of the nearest inert gas helium. Show Answer

Q130) Haematite is an ore of copper. Show Answer

Q131) The widely used method for refining impure metal is electrolytic refining. Show Answer