AP EAPCET Question Paper 2021 (Available): Check Previous Year Question Paper with Solution PDF (2023-2013)

1.

What does Lenz's Law give ?

2.

The molecule/ion having diamagnetic nature and a bond order of $1.0$ is

• $He^{+}_2$
• $Li^{+}_2$
• $B_2$
• None

3.

Which one of the following properties has same value for $H_2$ and $D_2$ ?

• density
• enthalpy of bond dissociation
• bond length
• melting point

4.

A box contains $30$ toys of same size in which $10$ toys are white and all the remaining toys are blue. A toy is drawn at random horn the box and it is replaced in the box after noting down its colour. If $5$ toys are drawn in tills way, then the probability of getting atmost $2$ white toys is

• $\left(\frac{6}{9}\right)^{2}$
• $\left(\frac{8}{9}\right)^{2}$
• $\left(\frac{7}{9}\right)^{2}$
• $\left(\frac{2}{3}\right)^{5}$

5.

$6g$ of graphite is burnt in a bomb calorimeter at $25^{\circ}C$ and $1\, atm$ pressure. The temperature of water increased from $25^{\circ}C$ to $30^{\circ}C$. If $\Delta H$ of this reaction is $-248 \,kJ\, mol^{-1}$, find out $C_v$ (in $kJ\, K^{-1}$) of bomb calorimeter.

• 20.667
• 41.33
• 1488
• 0.145