Q: Each of the following question contain statements given in two column, which have to be matched. The answers to this question have to be appropriately bubbled. If the correct matches are A-*p*, A-*q*; B-*q*, B-*r*; C*-r,* C-*s* and D-*s,* then the correctly bubbled matrix will look the one shown here:

Column I |
Column II |

A. same positive
dimension of mass |
(p) energy density |

B. same negative
dimension of length |
(q) surface tension |

C. same negative
dimension of time |
(r) gravitational
constant |

D. sum of dimensions
of length is 3 |
(s) pressure |

Ans: A-p, q, s; B-p, s; C-p, r, s, ;D –q, p, r