1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Food preservatives prevent spoilage of food due to microbial growth. The most commonly used preservatives are

A
$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{COONa}$$
B
table salt, sugar
C
vegetable oils and sodium benzoate
D
All of the above
2
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Among the following statements, the correct statement about the half-life period for a first order reaction is

A
independent of concentration
B
proportional to concentration
C
inversely proportional to concentration
D
inversely proportional to the square of the concentration
3
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

The electronic configuration of central metal atom/ion in $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$ is

A
$$t_{2 g}^5 e_g^0$$
B
$$t_{2 g}^4 e_g^2$$
C
$$t_{2 g}^4 e_g^3$$
D
$$t_{2 g}^6 e_g^0$$
4
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

A bromoalkane '$$X$$' reacts with magnesium in dry ether to form compound '$$Y$$'. The reaction of '$$Y$$' with methanol followed by hydrolysis yield an alcohol having molecular formula, $$\mathrm{C}_4 \mathrm{H}_{10} \mathrm{O}$$. The compound '$$X$$' is

A
bromomethane
B
bromoethane
C
1-bromopropane
D
2-bromopropane
EXAM MAP