Practice Test

Q1) Elements P, Q, R and S have atomic numbers 11, 15, 17 ans 18 respectively. which of them are reactive non-metals? Show Answer

Q2) Consider the following statements about an element 'X 'with number of protons 13.
1) It forms amphoteric oxide.
2) Its valency is three
3) the formula of its chloride is XCl
4) The correct statements is/are: Show Answer

Q3) Upto which element, the Law of Octaves was found to be applicable? Show Answer

Q4) According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order of Show Answer

Q5) In Mendeleev's periodic table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later? Show Answer

Q6) What type of oxide would Eka- aluminium form? Show Answer

Q7) Which of these does not represent Dobereiner's traid? Show Answer

Q8) An element 'X' is forming an acidic oxide. Its position in modern periodic table will be: Show Answer

Q9) Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table? Show Answer

Q10) Which of the following is the outermost shell for elements of period 2? Show Answer

Q11) Arrange the following elements in the order of their decreasing metallic character: Na, Si, Cl, Mg, Al. Show Answer

Q12) Which of the following elements will form an acidic oxide? Show Answer

Q13) Which of the following set of elements is written in order of their increasing metallic character? Show Answer

Q14) Which of the following are the characteristics of isotopes of an element?
1) Isotopes of an element have same atomic masses.
2) Isotopes of an element have same atomic number..
3) Isotopes of an element show same physical properties.
4) Isotopes of an element show same chemical properties. Show Answer

Q15) Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic table? Show Answer

Q16) 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): Mendeleev arranged element in horizontal rows and vertical columns.
Reason (R): Mendeleev ignored the order of atomic weight thinking that the atomic measurements might be incorrect. Show Answer

Q17) 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): Mendeleev left the gap under aluminium and silicon and called these Eka- aluminium and Eka- silicon, respectively.
Reason (R): Dobereiner arranged elements on the basis of increasing atomic number. 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): In triad, the three elements have same gaps of atomic masses.
Reason (R): Elements in a triad have similar properties. 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): According to Mendeleev, periodic properties of elements is a function of their atomic number.
Reason (R): Atomic number is equal to the number of protons. 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): Sixth and seventh periods in the periodic table contains 14 elements.
Reason (R): In the periodic table, 14 elements of sixth and seventh periods are known as lanthanoids and actinoids. 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): Be and Al show similar properties.
Reason (R): The metallic radius of Be is less than the metallic radius of Al. 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): The atomic and ionic radii generally decrease towards right in a period.
Reason (R): The ionisation enthalpy increases on moving towards left in a period. Show Answer

Q23) 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): Smaller the size of an atom, greater is the electronegativity.
Reason (R): Electronegativity refers to the tendency of atom to share electrons with other atom. Show Answer

Q24) 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): Noble gases are highly reactive.
Reason (R): Noble gases have stable closed shell electronic configuration. Show Answer

Q25) Mendeleev arranged the periodic table on the basis of their fundamental property: Show Answer

Q26) Eka aluminium and eka silicon were later replaced respectively as: Show Answer

Q27) The elements eka aluminium and eka silicon discovered by Mendeleev later found place in periodic table, Both of these elements belong to: Show Answer

Q28) Mendeleev's periodic table has: Show Answer

Q29) How do we classify these newly discovered elements (eka-aluminium and eka-silicon)? Show Answer

Q30) Which of these elements have smallest atomic size? Show Answer

Q31) Write valency of element E. Show Answer

Q32) Identify the elements which have similar chemical properties as the element X. Show Answer

Q33) The number of period that the modern periodic table has Show Answer

Q34) Which of them will have largest atomic radii: Show Answer

Q35) Which of the following is likely to be halogen? Show Answer

Q36) Which one of the following elements is likely to be a noble gas? Show Answer

Q37) Which two elements amongst these are likely to be the non-metals? Show Answer

Q38) Which one of the following will have largest atomic radii? Show Answer

Q39) To which period the listed elements belong? Show Answer

Q40) Which is the most reactive metal? Show Answer

Q41) Name the family of fluorine Q, R, T. Show Answer

Q42) Which of the following element belongs to group 2? Show Answer

Q43) Which other element is likely to present in the group in which fluorine is present: Show Answer

Q44) Name the element P placed below Carbon in group 14: Show Answer

Q45) Dobereiner could identify how many triads from the elements known at that time? Show Answer

Q46) Which one of the following elements exhibit maximum number of valence electrons? Show Answer

Q47) Choose the correct statement Show Answer

Q48) Which of the following statements is incorrect for atomic size? Show Answer

Q49) Which of the following gives the correct increasing order of the atomic radii of O, F and N? Show Answer

Q50) Which metal is among the first ten elements in modern periodic table? Show Answer

Q51) An element X is forming an acidic oxide. Its position is modern periodic table will be Show Answer

Q52) An Oxide of a metal shows no action with blue-litmus but turns red litmus to blue in its aqueous solution.
The possible formula of the metal oxide can be Show Answer

Q53) 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): Be, Mg and Ca can be classified as Dobereiner's triads.
Reason (R): Atomic mass of Mg is approximately the average of the sum of atomic masses of Be and Ca. Show Answer

Q54) 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): Sodium is an element of group 1 of the modern periodic table.
Reason (R): All the elements of group 1 of the modern periodic table contain two electrons in their outermost shell. Show Answer

Q55) 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): Noble gases are also called inert gases.
Reason (R): Noble gases have a complete octet. Show Answer

Q56) 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): Atomic size increase on going down the group in the modern periodic table.
Reason (R): New shell are being added as we go down the group in the modern periodic table. Show Answer

Q57) 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): Electronegativity of fluorine is greater than that of oxygen.
Reason (R): The electronegativity of the elements increases along a period since the metallic character increases. Show Answer

Q58) Who discovered modern periodic table? Show Answer

Q59) Along the period 3, which atom can loose electron easily? Show Answer

Q60) Which metal has the highest metallic character in group 1? Show Answer

Q61) Which of the following properties increases down the group? Show Answer

Q62) Which atom is most electronegative along the period 4? Show Answer

Q63) Which of the following are noble gases? Show Answer

Q64) Which are halogens? Show Answer

Q65) Which of the following elements have valency 4? Show Answer

Q66) Which of the following can form ionic bond? Show Answer

Q67) Which of the following elements have 2 valence electrons? Show Answer

Q68) Which of the following is a transition element ? Show Answer

Q69) The metal which is hard and has high melting point and used in filaments of electrical bulbs is Show Answer

Q70) The lightest liquid metal is Show Answer

Q71) An element has 12 protons. The group and period to which this element belongs to is Show Answer

Q72) An element has atomic number 17. To which group, period does it belong ? It is metal or non-metal ? Show Answer

Q73) The element which has least tendency to lose electron is Show Answer

Q74) Which of the following gives the correct order of the atomic size? Show Answer

Q75) Which of the following gives the correct order of size ? Show Answer

Q76) Which of the following oxide is most basic? Show Answer

Q77) Which of the following hydroxide is most basic? Show Answer

Q78) Which of the following Is the correct order of the atomic size? Show Answer

Q79) The elements of group 16 are called Show Answer

Q80) Which of the following elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period ? Show Answer

Q81) Which among the following elements has the largest atomic radii ? Show Answer

Q82) Which of following elements does not lose an electron easily ? Show Answer

Q83) The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong ? Show Answer

Q84) Which one of the following does not increase while moving down the group of the periodic table ? Show Answer

Q85) Which of the following is most reactive Show Answer

Q86) Which of the following is most reactive Show Answer

Q87) Chlorine (17) belongs to which group and period Show Answer

Q88) Silicon (14) belongs to class of Show Answer

Q89) Which of following is non-metal and to which group does it belong ? Show Answer

Q90) 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): Group 1 and 2 element all are metals.
Reason (R): Group 1 and 2 elements can lose electrons early to form cations (positive ions) Show Answer

Q91) 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): K is more reactive than Na.
Reason (R): K is smaller in size than Na. Show Answer

Q92) 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): Fluorine is more reactive than chlorine.
Reason (R): Fluorine and chlorine belong to Group 17 called Halogen. Show Answer

Q93) 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): There are 118 elements discovered so far.
Reason (R): Sulphur (16) belongs to Group 16 and belongs to 3rd period. Show Answer

Q94) Mendeleev arranged all the 63 known elements in an increasing order of their atomic masses Show Answer

Q95) There are 7 group and 18 periods in a modern periodic table. Show Answer

Q96) Modern periodic law states that properties elements are a periodic function of their atomic masses. Show Answer

Q97) Each period marks a new electronic shell getting filled. Show Answer

Q98) Valency of elements in a particular group is different. Show Answer

Q99) The tendency to lose electrons from the outermost shell of an atom is called metallic character of an element. Show Answer