Effective Length and Slenderness Ratio

Q. According to $\text{IS 456 : 2000,}$ maximum slenderness ratio for a short concrete column is

1. Less than 12
2. Between 12 and 18
3. Between 18 and 24
4. More than 24

Q. The effective length of a R.C. column continuing through two storeys, properly restrained at both ends in position and direction is

1. 0.50 L
2. 0.75 L
3. L
4. 2 L

Q. While designing a steel column from Fe250 grade steel, a base plate resting on a concrete pedestal of M30 grade is required. The bearing strength of concrete
(in $N/m{m}^2$) as per IS 456 : 2000 is__________.