1. Which one is the group of element with 59 as atomic number in periodic table?
IB
1IB
IIIB
IVB
VB
2. A and B are two sets. A', A are complementary set of A. Then An (BUA') =?
(AUB) n (A' UA)
A n B
(AUB) n A'
(A n B) UA
(AUB) n A
3. Which one below is used as antifreeze?
40% aqueous solution of ethylene glycol
40% aqueous solution of methanol
aqueous solution of ethanol
aqueous solution of acetone
mixture of (a) and (c)
4. Which one below indicates Boyle's law?
V∝T \mathrm{V} \propto \mathrm{T} V∝T (P constant)
V∝1P \mathrm{V} \propto \frac{1}{\mathrm{P}} V∝P1 (T constant)
PV=nRT P V=n R T PV=nRT
P∝T(V P \propto T(V P∝T(V constant ) ) )
P=p1+p2+p3 P=p_{1}+p_{2}+p_{3} P=p1+p2+p3
5. 1s22s22p63s23p63d54s1 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1} 1s22s22p63s23p63d54s1 Electronic configuration is of which element?
K
Sc
Cr
Mn
Cu