List of top Chemistry Questions asked in Punjab PMET

The unit of specific conductivity is

Which one is the correct representation of $ NH_{4}^{+} $ ion?

The $ P-P-P $ bond angle in white phosphorus is

The fertilizer named Nitrolim is prepared by the use of

Which of the following is present in tenon?

Carborundum is the name of

Soda ash is

The chemical which is known as the king of chemicals is

Which one of the following types of drugs reduces fever?

Which one of the following types of drugs reduces fever ?

Hinsberg reagent, $C_{6}H_{5}SO_{2}Cl$ does not react with

Correct order of freezing point of $ 1\,M $ solution of sucrose, $ KCl,\,BaCl_{2}$ and $ AlCl_{3}$ is

The main difference between formic acid and acetic acid is that formic acid is

$ {C6H5Cl +CH3Cl->[Na /dry\, ether] C6H5CH3 + 2NaCl}$ This reaction is an example of

Ordinary glass is formed by mixing of

$NH_{3}$ gas is passed over heated copper oxide. It oxidises to

$ {CH2 = CH2 ->[HBr] X} {->[A KOH] Y} { ->[{Na_2CO_3}][{I_2}] Z}$ In the above reaction sequence, $ Z $ is

Which of the following compounds shows optical isomerism?

Lucas test is given fastly by

Which polymers occur naturally ?

When oxyhaemoglobin changes to de-oxyhaenioglobin, $Fe^{2+}$ ion changes from

When $AgNO _{3}$ solution is added in excess to $1\, M$ solution of $CoCl _{3} \cdot x NH _{3}$, one mole of $AgCl$ is formed. What is the value of $x$ ?

The bond angle in $AsH _{3}$ is greater than that in

$N _{2}(g)+3 H _{2}(g) \rightleftharpoons 2 NH _{3}(g)+22\, kcal$. The activation energy for the forward reaction is $50\, kcal$. What is the activation energy for the backward reaction?

The temperature of the system decreases in the process of