Questions in vectors-m

Select	Question
	If the vectors $a\mathbf{i}+b\mathbf{j}+c\mathbf{k}$ and $p\mathbf{i}+q\mathbf{j}+r\mathbf{k}$ are perpendicular, then
	If $\mathbf{a}=2\mathbf{i}+4\mathbf{j}+2\mathbf{k}$ and $\mathbf{b}=8\mathbf{i}-3\mathbf{j}+\lambda \mathbf{k}$ and $\mathbf{a}\,\bot \,\mathbf{b},$ then value of $\lambda $ will be
	The vector $\frac{1}{3}\,(2\mathbf{i}-2\mathbf{j}+\mathbf{k})$ is
	If the vectors $a\mathbf{i}+2\mathbf{j}+3\mathbf{k}$ and $-\mathbf{i}+5\mathbf{j}+a\mathbf{k}$ are perpendicular to each other, then $a=$
	Which of the following is a true statement
	If $\mathbf{a}=\mathbf{i}-2\mathbf{j}$ and $\mathbf{b}=2\mathbf{i}+\lambda \mathbf{j}$ are parallel, then $\lambda $ is
	If $ai+6j-k$ and $7i-3j+17k$ are perpendicular vectors, then the value of a is
	If $4i+j-k$ and $3i+mj+2k$ are at right angle, then $m=$
	If the vectors $3i+\lambda \,j+k$ and $2i-j+8k$ are perpendicular, then $\lambda $ is
	If a and b are two non-zero vectors, then the component of b along a is