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In which of the reactions represented by the following equations is HNO3 behaving as a typical acid?
Which of the following would dissolve in warm dilute H2SO4 without effervescence, to give a blue solution?
A mixture of calcium chloride and calcium trioxocarbonate (IV) in water can be separated by
Which of the following pairs of reagents react to produce hydrogen?
P\(_{TOTAL}\) = P\(_1\) + P\(_2\) + P\(_3\) + ...Pn' where P Total is the pressure of a mixture of gasses. The equation above is an expression of
Which of the following statements about ideal gases is/are correct? 1. The cohesive forces between their particles are negligible ll. They have no definite volume but occupy the volume of their containers III. They are not compressible IV. Their particles collide with loss of energy
Which of the following features of a human skeleton can be determined by carbon-dating?
A sheet of paper is placed in the path of a beam from a radioactive source. The emissions that pass through the paper consist of
Which of the following compounds is covalent?
What is responsible for metallic bonding?
The presence of unpaired electrons in an atom of a transition metal gives rise to
The atom of an element X combines with aluminium (\(_{13}\)AI). What is the formula of the compound formed?
Elements which belong to the same group in the Periodic Table are characterized by
Use the solubility curves below to answer the question. If 1 dm\(^3\) of a saturated solution of L at 60\(^0\)C is cooled to 25\(^0\)C, what amount in mole will separate out?
The diagram above represents the formation of
Use the graph above to answer this question.How long does it take all the solid to melt?`
Use the graph above to answer this question.If the gas is cooled, at what temperature will it start to condense?
Which of the following gases contains the least number of atoms at s.t.p?
When sodium reacts with water, the resulting solution is
\(C_{12}H_{22}O_{11(s)} + H_2SO_{4(aq)} → 12C(s) + 11H_2O(l) + H_2SO_{4(aq)}\)
In the reaction above, tetraoxosulphate (VI) acid function as