Practice Test

Q1) The quantity of matter present in an object is called its Show Answer

Q2) The state of matter which consist of super energetic particles in the form of ionized gases is called Show Answer

Q3) The force that binds the particles of matter together is known as Show Answer

Q4) A gas can be compressed to a fraction of its volume. The same volume of gas can be spread all over a room. The reason for this is that Show Answer

Q5) In which phase of matter would you expect compound (alcohol exists) at room temperature? Show Answer

Q6) Which is incorrect statement?
Show Answer

Q7) Select the one that when used would be considered as best condition for liquification of gas. Show Answer

Q8) The element not present in fertilizer is Show Answer

Q9) The change of a liquid into vapour is called Show Answer

Q10) What term is used to describe the phase change of a solid to a liquid ? Show Answer

Q11) What is the term used to describe the phase change as a liquid becomes a solid? Show Answer

Q12) Select the correct order of evaporation for water, alcohol , petrol and kerosene oil. Show Answer

Q13) Which one is a sublime substance ? Show Answer

Q14) Carborundum is a compound of Show Answer

Q15) Which one will help to accelerate the process of evaporation of a liquid kept in an open china dish? Show Answer

Q16) Air is regarded as a mixture because Show Answer

Q17) White gold is used in jewelry and contains two elements, gold and palladium. A jeweler has two different sample that are both identical in appearance and have a uniform composition throughout. What can be said about the sample? Show Answer

Q18) Two substance A and B when brought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. The substance C is Show Answer

Q19) A mixture of common salt, sulphur sand and iron filings is shaken with carbon disulphide and filtered through a filter paper. The filtrate is evaporated to dryness in a china dish. What will be left in the dish after evaporation? Show Answer

Q20) A mixture of ethanol and water can be separated by Show Answer

Q21) Two sample of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead from one oxide was half the weight of lead obtained from the other oxide. The data illustrates- Show Answer

Q22) In compound A, 1.00g of nitrogen units with 0.57g of oxygen. In compound B, 2.00g of nitrogen combines with 2.24g of oxygen. In compound C, 3.00g of nitrogen combines with 5.11g of oxygen. These result obey the following law. Show Answer

Q23) The drawback of Rutherford 's model is its inability to Show Answer

Q24) C11-L-methyl-methionine is used for Show Answer

Q25) If two element A and B contain 6 and 2 electron in their N-shell and M-shell respectively. Then the ration of atomic numbers of A and B is Show Answer

Q26) Which one of the following statement is not true?
Show Answer

Q27) The atomic number of an element is 11 and its mass number is 23. The correct order representing the number of electrons, protons and neutrons respectively is this atom is Show Answer

Q28) Members of which of the following have similar chemical properties ? Show Answer

Q29) A natural phenomenon that supports the experimental conclusion that atoms are divisible is Show Answer

Q30) The particles having least penetrating power Show Answer

Q31) Which of the following nuclides is least likely to be stable? Show Answer

Q32) Which of the following statements is not correct for Bohr's model of an atom? Show Answer

Q33) Which of the following describes an isotope with a mass number of 99 that contains 56 neutrons in its nucleus ? Show Answer

Q34) Which one of the following pairs is correctly matched?
Show Answer

Q35) Which would be the electrical charge on a sulphur atom containing 18 electrons? Show Answer

Q36) An atom which has mass number of 14 and has 8 neutrons is an Show Answer

Q37) Which of the following elements has same number of protons electrons and neutrons? Show Answer

Q38) The charge on an electron is Show Answer

Q39) The nucleus pf an atom contains Show Answer

Q40) Which of the following statements is incorrect?
Show Answer

Q41) Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
1) Rutherford's atomic model
2) Thomson's atomic model
3) Bohr's atomic model
Show Answer

Q42) In the isotopes of hydrogen the sum of protons and neutrons is
1) six
2) five
3) two
4) three
The correct alternative are Show Answer

Q43) Different chromatographic techniques are used
1) to separate all sorts of mixture
2) only volatile compounds
3) only solid compounds
4) only isomers

Show Answer

Q44) In which of the following conditions, the distance between the molecules of hydrogen gas would increase?
1) Increasing pressure on hydrogen contained in a closed container
2) Some hydrogen gas leaking out of the container
3) Increasing the volume of the container of hydrogen gas
4) Adding more hydrogen gas to the container without increasing the volume of the container Show Answer

Q45) Which of the following statements are true for pure substances?
1) Pure substances contain only one kind of particles.
2) Pure substances may be compounds or mixtures
3) Pure substances have the same composition throughout
4) Pure substances can be exemplified by all elements other then nickel.
Show Answer

Q46) Consider the following statements:
1) All homogeneous mixture are called solution
2) A suspension of chalk in water is a homogeneous mixture.
Which of the statement(s) given is/ are correct?
Show Answer

Q47) Consider the following statements:
1) Boiling is a bulk phenomenon.
2) Evaporation is a surface phenomenon
Which of these statement(s) given above is/are correct? Show Answer

Q48) Consider the following statements:
1) Water at room temperature is a liquid.
2) When a liquid is cooled very quickly, it always forms a crystal.
3) Atoms in a liquid apart then the atoms in a gas.
Which of these statement(s) given above is/are correct?
Show Answer

Q49) Consider the following statements:
1) The rate of evaporation depends only on the surface area exposed to the atmosphere.
2) Latent heat of vaporization is the heat energy required to change 1 kg of a liquid to gas at atmospheric pressure at its melting point.
Which of the statement(s) given is/ are correct? Show Answer

Q50) Consider the following statements:
1) The molecules in a gas are in constant motion.
2) Gases have the same pressure throughout the entire atmosphere
3) Gas molecules are always evenly distributed in the atmosphere
Which of the statement(s) given is/ are correct? Show Answer

Q51) The L-shell
1) has n=2
2) is nearer to the nucleus than K-shell
3) can have a maximum of 8 electrons.
4) can have a maximum of 2 electrons.
Show Answer

Q52) Which of the following statements are true about the quantum numbers n, l, m and s ?
1) l gives an idea of the shape of the orbital.
2) m gives the information of the energy of electron in a given orbital.
3) n gives the idea of the size of the orbital.
4) s gives the direction of spin of electron in an orbital. Show Answer

Q53) Consider the following statements:
1) Atom bomb us based upon the principle of uncontrolled nuclear fusion.
2) Hydrogen bomb is based upon the principle of uncontrolled nuclear fission.
3) Nuclear reactor is based upon the principle of controlled nuclear fission.
which of the statement(s) given above is/are correct?
Show Answer

Q54) A moderator in the nuclear reactor
1) absorbs secondary electrons of the fission to maintain the neutron multiplication factor to unity.
2) slow down the neutrons from the fission process
3) causes the kinetic energy of high speed neutrons of the fission to decrease.
4) regulates the excess neutrons produced in the fission. Show Answer

Q55) Which of the following statements are correct ?
1) Radioactive isotope C-14 is formed by the bombardment of N-14 in the upper atmosphere by cosmic ray neutrons.
2) C-14 decays into N-14 through alpha decay
3) All living things contain constant proportion of C-14 and hence constant activity per g of carbon
4) After the death of animal or plant, incorporation of C-14 which permits the age determination of organic matter. Show Answer

Q56) A radioactive element X has an atomic number of 100 . it decays directly into an element Y which decays directly into an elements Z . In both process a charged particle is emitted. Point out the correct statement(s) of the following
1) Y has an atomic number of 102
2) Y has an atomic number of 101
3) Z has an atomic number of 100
4) Z has an atomic number of 99
Show Answer

Q57) Consider the following statements:
1) An electron has a mass that is much less than a a proton.
2) Any electron can only be found in one of the seven possible atomic shells.
3) The innermost atomic shell can hold a maximum of 18 electrons.
Which of these statement(s) above is/are correct? Show Answer

Q58) Consider the following statements:
1) Radioactive isotope of iodine is used for making the medicine called tincture iodine.
2) There is no particle of matter smaller than an atom.
Which of these statement(s) above is/are correct ? Show Answer

Q59) Considering Thomson's model of atom, which of the following statement are correct?
1) the mass of the atom is assumed to be uniformly distributed over the atom.
2) The positive charge is assumed to be uniformly distributed over the atom.
3) The electrons are uniformly distributed in the positively charged sphere.
4) The electron attract each other to stabilise the atom Show Answer

Q60) Assertion : Moving phase is liquid and stationary phase is solid is paper chromatography.
Reason : Paper chromatography is used for analysis of polar organic compounds. Show Answer

Q61) Assertion : Refining of petroleum involves fractional distillation .
Reason : Fractional distillation involves repeated evaporation and distillation. Show Answer

Q62) Which of the following does not have a sharp melting point ? Show Answer

Q63) Consider the following molecules
1) Dry ice
2) Iodine
3) Chlorine
4) Copper
5) Nylon
Out of these the odd pair is Show Answer

Q64) A solution of sand in water
1) forms homogeneous solution.
2) settle on standing .
3) shows Tyndall's effect.
4) is iodised salt, a homogeneous mixture.
Correct statements are Show Answer

Q65) Consider the following substances
1) Aniline
2) Glycerine
3) Nitrobenzene
4) Naphthalene
Which of these are purified by steam distilation ? Show Answer

Q66) Fixation of nitrogen implies Show Answer

Q67) Atoms having the same number of protons and different number of neutrons are called Show Answer

Q68) Select the incorrect statements and choose the correct answer using the codes.
1) Cathode rays are originated from cathode and anode rays are from anode.
2) Both travel in straight line.
3) Electrons are the fundamental particle of an atom.
4) e/m ratio of anode rays does not depend upon the nature of gas taken in discharge tube. Show Answer

Q69) Regarding the atom of a chemical element the magnetic quantum number refers to Show Answer

Q70) The efforts to detect the existence of Higgs Boson particle have become frequent news in the
recent past. What is/are the importance/importances of discovering this particle ?
1) it will enable us to understand as to why elementary particles have mass.
2) It will enable us in the near future to develop the technology of transferring matter from one point
to another without traversing the physical space between them.
3) It will enable us to create better fuels for nuclear fission.
Select the correct answer using the codes given below Show Answer

Q71) Which of the following is a correct statement about proton ? Show Answer

Q72) Which one of the following configurations is correct for iron ? Show Answer

Q73) Which electron configuration described a neutral atom in an excited state ? Show Answer

Q74) Consider the following statements with reference to X-rays.
1) The produced heat when absorbed by matter.
2) They are generated when fast moving electrons strike a metal target.
3) They can penetrate through a thin sheet of aluminium.
Which of the statements given above are correct ? Show Answer

Q75) In which categories did Marie Curie win her two different Nobel prizes ? Show Answer

Q76) Radioactive dating” is a technique which can be used to measure Show Answer

Q77) Which one of the following polymers is widely used for making bullet proof material ? Show Answer

Q78) Which one of the following is used as an explosive? Show Answer

Q79) Which of the following is the electronic configuration of a metallic element? Show Answer

Q80) A team of scientists at Brookhaven national Laboratory including those from India created the heaviest anti-matter (anti-helium nucleus). What is/are the implication/implications of the creation of anti-matter?
1. It will make mineral prospecting and oil exploration easier and cheaper.
2. It will help probe the possibility of the existence of stars and galaxies made of anti-matter.
3. it will help to understand the evolution of the universe.
Select the correct answer using the codes given below Show Answer

Q81) Which one of the following sets of elements was primarily responsible for the origin of life on the Earth? Show Answer

Q82) A single type of atom is found in- native elements Show Answer

Q83) The atomic nucleus was discovered by : Show Answer

Q84) Neutron was discovered by : Show Answer

Q85) Which of the following is not a subatomic particle? Show Answer

Q86) Which one of the following pairs constitutes particle antiparticle pair ? Show Answer

Q87) The alpha particle carries two positive charge. Its mass is very nearly equal to that of Show Answer

Q88) The nucleaus of Helium has - Show Answer

Q89) Which of the following carries a negative charge? Show Answer

Q90) In an atom, the order of filling up of the orbitals is governed by Show Answer

Q91) Regarding the atom of a chemical element, the magnetic quantum number refers to Show Answer

Q92) What is the mass number of an element, the atom of which contains two protons, two neutrons and two electrons? Show Answer

Q93) The atoms, in which the number of protons is same but the number of neutrons is different, are known as – Show Answer

Q94) Isotopes is that nuclei of atomic nucleus in which- Show Answer

Q95) Isotonic group, in the following, is : Show Answer