Practice Test

Q1) In the modern periodic table one of the following does not have appropriate position- Show Answer

Q2) The correct order of first IE of C,N, O, F is - Show Answer

Q3) Arrange F,Cl,O,N in the decreasing order of electronegativity - Show Answer

Q4) Arrange S,O and Se in ascending order of electron affinity
Show Answer

Q5) The electronegativities of F, Cl, Br and I are 4.0, 3.0,2.8 and 2.5 respectively. The hydrogen halide with a high percentage of ionic character is Show Answer

Q6) Which of the following compounds has electrovalent linkage? Show Answer

Q7) Bonding in ferric chloride is Show Answer

Q8) The most favorable conditions for the ionic bonding to occur are
Show Answer

Q9) Which of the following is covalent in nature Show Answer

Q10) Nobel gases were included in Mendeleev's periodic table in the - Show Answer

Q11) The elements with atomic numbers 3,11,19, 37 and 55 belong to Show Answer

Q12) Arrange the following in increasing order of their atomic radius : Na, K, Mg, Rb - Show Answer

Q13) Which of the following statement is not correct from the view point of molecular orbital theory? Show Answer

Q14) The elements A,B,C,D get their outer shell progressively filled with electrons. Arrange the elements in increasing order of their ionization potentials. Show Answer

Q15) Which fact is not valid for Dobereiner's triads?
Show Answer

Q16) Which of the following statements is incorrect form the point view of modern periodic table Show Answer

Q17) Which of the given elements A,B,C,D and E with atomic number 3,11, 15, 18 and 19 respectively belong to the same period? Show Answer

Q18) Which of the given elements A,B,C,D and E with atomic number 2,3,7,10 and 30 respectively belong to the same period? Show Answer

Q19) Element A belongs to Group VII in p-block and element B belong to Group I in s-block of the periodic table. Out of the following assumption, the correct one is: Show Answer

Q20) Which of the following set of elements is written in order of their increasing metallic character ? Show Answer

Q21) Arrange the following elements in the order of their increasing non-metallic character Li, O, C, Be, F Show Answer

Q22) Which of the following properties do not match elements of halogen family? Show Answer

Q23) Which of the following compounds have highest melting point ? Show Answer

Q24) Which of the following gives the correct increasing order of the atomic radii of O,F and N? Show Answer

Q25) The early attempt to classify elements as metals and non-metals was made by Show Answer

Q26) Newlands could classify elements only upto Show Answer

Q27) Which of the following is correct set of Dobereiner Triads ? Show Answer

Q28) An atom of an element A has three electrons in its outermost shell and that of B has six electrons in the outermost shell. The formula of the compound between these two will be : Show Answer

Q29) Mendeleev classified elements in Show Answer

Q30) An element 'M' has an atomic number 9 and its atomic mass 19. The ion of M will represented by Show Answer

Q31) Which of the following properties generally decrease along a period? Show Answer

Q32) According to VSEPR theory, the most probable shape of the molecule having 4 electron pairs in the outer shell of the central atom is Show Answer

Q33) The elements with atomic numbers 2,10,18,36,54 and 86 are all Show Answer

Q34) Which is not true about noble gases? Show Answer

Q35) Sodium chloride is an ionic compound whereas hydrogen chloride is mainly covalent because Show Answer

Q36) On moving horizontally across a period, the number of electrons in the outermost shell increases from ______to ____ . Show Answer

Q37) Which is a metalloid ? Show Answer

Q38) Which of the following statement is true ? Show Answer

Q39) For two ionic solids CaO and Kl. Identify the wrong statement among the following Show Answer

Q40) Which of the following ion has not bond order of 2.5? Show Answer

Q41) Which of the following pairs have identical bond order? Show Answer

Q42) Which of the following substances has the least polarity in bond? Show Answer

Q43) Which of the following substances has least ionic character? Show Answer

Q44) The correct order increasing Ionic character is Show Answer

Q45) Which of the following contains both covalent and ionic bond? Show Answer

Q46) A lone pair of electrons in an atom implies Show Answer

Q47) With reference to the chemical element with atomic number 17, consider the following statements:
1) It belongs to second period in the periodic table of chemical elements.
2) It forms anion with negative charge.
Which of the statements given above is/are correct? Show Answer

Q48) Important merit of modern periodic table is-
1) It explains why element in the same group have the same chemical elements.
2) hydrogen has been placed accurately.
3) isotopes have been placed at same position
4)it is based on classifying elements according to their atomic number.
Show Answer

Q49) Which of the following exhibit variable valency?
1) Sodium
2) Chromium
3) Copper
4) Zinc
Show Answer

Q50) Which of the following statements are correct about the trends when going from left to right across the periods of periodic Table ?
1) The elements become less metallic in nature.
2) The number of valence electrons increases.
3) The atoms lose their electrons more easily.
4) the oxides becomes more acidic. Show Answer

Q51) Which of the following statements regarding covalent bond are true?
1) The electrons are shared between atoms
2) The bond is non-directional.
3) The strength of the bond depends upon the extent of overlapping.
4) The bond formed may or may not be polar. Show Answer

Q52) Consider the following statements:
1) Fluorine has the highest electron affinity in the periodic table,
2) Noble gases are placed extremely left in periodic table.
3) Magnesium is more metallic in nature than sodium.
Which of these statements(s) is/are correct?
Show Answer

Q53) The statements that are correct for the periodic classification of elements is -
1) the properties of elements are the periodic functions of their atomic numbers.
2) non-metallic elements are lesser in number than metallic elements.
3) the first ionization energy along a period do not decreases in a regular manner with increase in atomic number . Show Answer

Q54) Consider the following statements:
1) Atomic radii decreases across a row of the periodic table when we move from left to right.
2) Atomic radii increases down the column as we move from top to bottom.
3) Although the order of elements is based on atomic numbers, vertical families share similar chemical properties.
Which of the statements given above are correct?
Show Answer

Q55) In the periodic table , the metallic character of elements-
1) increases from left to right across a period and on descending down a group.
2) decreases, from left to right across a period and moving up group from top to bottom.
3) increases from left to right across a period and decreases on descending a group.
4) decreases from right to left across a period and increases on descending down a group Show Answer

Q56) Which of the following statement(s) about the Modern Periodic Table is/are incorrect?
1) The elements in the Modern Periodic Table are arranged on the basis of their decreasing atomic number.
2) The elements in the Modern Periodic Table arranged on the basis of their increasing atomic masses.
3) Isotopes are placed in adjoining group(s) in the Periodic Table.
4) The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic number .
Show Answer

Q57) Consider the following statements:
1) The elements silicon, germanium and arsenic are called metalloids.
2) Metalloids have properties quite different from those of metal and non-metals.
Which of theses statement(s) above is/are correct ? Show Answer

Q58) Consider the following statements:
1) Metals will be found in the right side of the periodic table.
2) The elements P, S and O belong to the same period.
Which of these statements(s) is/are correct? Show Answer

Q59) As compared to covalent compounds, electrovalent compounds generally have
1) low melting points
2) low boiling points
3) high boiling points
4 )high melting points Show Answer

Q60) Which of the statements below are incorrect?
1) The covalent compound exist as ions.
2) The electrovalent compounds exist as molecules.
3) The covalent compound exist as molecule not ions
4) The covalent compounds exist both as ions and molecules. Show Answer

Q61) Consider the following statements:
1) As Z (atomic number) increases, atomic orbitals become smaller and more stable.
2) The number of shell increases in a given period from left to right in the periodic table .
Which of these statements(s) above is/are correct? Show Answer

Q62) Consider the following statements:
1) The discovery of inert gases later on did not disturb Mendeleev's arrangement.
2) In the present periodic table, periodicity in the properties of elements is related to the periodicity in their electronic configurations.
Which of these statements(s) above is/are correct? Show Answer

Q63) Consider the following statements:
1) There are 16 groups and 7 periods in the modem periodic table.
2) Electro-positive character decreases on moving down across all groups.
3) Electro-negetivity in a period increases right from the alkali metal to the inert gas element .
Which of these statements(s) is/are correct? Show Answer

Q64) Assertion : Nitrogen has higher ionization energy than that of oxygen.
Reason : Nitrogen gas smaller atomic size than that of oxygen Show Answer

Q65) Assertion : according to Mendeleev, periodic properties of elements is a function of their atomic number.
Reason :Atomic number is equal to the number of protons.
Show Answer

Q66) Assertion : LiCl is predominately a covalent compound.
Reason : Electronegativity difference between Li and Cl is too small Show Answer

Q67) Assertion : In group 1 of alkali metals, the element cesium (Cs) has the maximum size.
Reason : The atomic size increases down the group. Show Answer

Q68) Assertion : Chlorine is the most reactive member of the halogen family
Reason : Size of chlorine is more than that of fluorine . Show Answer

Q69) Consider the following statements with reference to the Periodic Table of chemical
1) lonisation potential gradually decreases along a period.
2) In a group of elements, electron affinity decreases as the atomic weight increases.
3) In a given period, electronegativity decreases as the atomic number increases
Which of these statement(s) is/are correct ? Show Answer

Q70) Assertion (A) In the periodic Table of chemical elements, electron affinity is always found to increase
from top to bottom in a group.
Reason (R) In a group, the atomic radii generally increase from top to bottom. Show Answer

Q71) Consider the following statements
1) Electron affinity is highest for chlorine.
2) Zn is a d-block element but not a transition elements.
3) Group 15 elements are known as pnicogens
The correct statements are Show Answer

Q72) The chemical used as a 'fixer' in photography is Show Answer

Q73) Which one of the following statements is not correct ? Show Answer

Q74) Which one of the following statements is correct ? Show Answer

Q75) Which of the following material is very hard and very ductile ? Show Answer

Q76)
Which of the following is not radioactive ? Show Answer

Q77) Which of the following is also called stranger gas ? Show Answer

Q78) What are Rubies and sapphries chemically known as ? Show Answer

Q79) Consider the following statements about oxygen.
1) It was discovered by Pristeley.
2) It forms oxides with metals but not with non-metals.
3) It is non-combustible
4) It is used as a rocket fuel.
The correct statements are Show Answer

Q80) Consider the following statements
1) steel contains 0.2 to 1.5% carbon.
2) Wrought iron is soft, ductile and malleable.
Correct statements are Show Answer

Q81) Consider the following statements
1) Ozone is an isomer of oxygen.
2) Ozone is used as an insecticible.
Show Answer

Q82) Coloured glasses for goggles contain Show Answer

Q83)
The elements of a group in the Periodic Table Show Answer

Q84) Assertion (A) The nuclear fusion reaction released less energy than the fission reaction
Reason (R) The nuclear fusion reaction takes place in the sun and other stars Show Answer

Q85) By which one of the following an old written material which cannot be read easily, can be read ? Show Answer

Q86) REM is a unit of Show Answer

Q87) The most reactive among the halogens is Show Answer

Q88) Which one of the following is the correct sequence of the given substance in the decreasing order of their densities ? Show Answer

Q89) Which noble gas was discovered in chromosphere of the sun ? Show Answer

Q90) Carbogen is Show Answer

Q91) Tincture of iodine is Show Answer

Q92) Compounds having same number and kind of atoms but different arrangement of atoms in their molecules are called Show Answer

Q93) Radioactive substance used in dating geological objective is Show Answer

Q94) X-rays comprise of Show Answer

Q95) Consider the following statements
1) In Modern Periodic Table, the number of periods is 7.
2) In Modern Periodic Table, the number of groups is 18.
3) The long form of Periodic Table was developed by range and Werner.
Which of the following is/are correct ? Show Answer

Q96) The long form of Periodic Table consist of Show Answer

Q97) The long form of periodic table is based on Show Answer

Q98) Which of the following pairs of elements is in the same period of the Periodic Table ? Show Answer

Q99) The first element of rare earth metal is Show Answer

Q100) Which one among the following is the correct order of reactivity of he elements ? Show Answer

Q101) Two new elements (discovered in August , 2003) with atomic number 113 and 115 are to be placed in Show Answer

Q102) The colour imparted by Co(II) earth's crust is Show Answer

Q103) Which one of the following is known as salt peter ? Show Answer

Q104) Consider the following statements
1) Banking soda is used in the extinguishers.
2) Quick lime is used in the manufacture of glass.
3) Gypsum is used in the manufacture of plaster of paris
Which of the statements given above is/are correct ? Show Answer

Q105) Which of the following statements is incorrect ? Show Answer

Q106) Consider the following statements with reference to the periodic table of chemical elements :
1. Ionisation potential gradually decreases along a period
2. In a group of elements, electron affinity decreases as the atomic weight increases
3. In a given period, electronegativity decrease as the atomic number increases
Which of these statement (s) is/are correct ? Show Answer

Q107) What is the usual property of oxides of Group III and IV? Show Answer

Q108) Which one of the following pairs is not correctly matched: Show Answer

Q109) Assertion (A) : In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group
Reason (R) : In a group, the atomic radii generally increase from top to bottom. Show Answer

Q110) The most reactive among the halogens is Show Answer

Q111) The halogen being used as analgesic is- Show Answer

Q112) The technique of chrometography is used to- Show Answer

Q113) Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ? Show Answer

Q114) Which one of the following liquids is very good conductor of heat? Show Answer

Q115) Which one of the following metals is liquid at room temperature? Show Answer

Q116) Iron is obtained from : Show Answer

Q117) Which of the following materials has the highest electrical conductivity ? Show Answer

Q118) Which is the main are used for the production of Aluminium? Show Answer

Q119) Aluminium metal is obtained from Show Answer

Q120) Which one of the following statements is correct ? Show Answer

Q121) Galvanised iron is coated with Show Answer

Q122) Aluminium surface are often 'anodized'. This means the deposition of a layer of Show Answer

Q123) Alloy made by which metal is used to make aeroplane was parts in compartment of train? Show Answer

Q124) Mercury-metal mixture is Show Answer

Q125) Which one of the following metals does not form amalgam ? Show Answer

Q126) Which one of the following alloys is called an amalgam ? Show Answer

Q127) Solder used in soldering metal pieces consists of any alloy of : Show Answer