Post Utme Chemistry Past Questions and Answers

Question 1056:

What volume of distilled water should be added to 400 \(cm ^{3}\) of \(2.0 moldm ^{-3}\) solution to obtain \(0.20\) moldm \(^{-3}\) solution?

A. \(60 cm ^{3}\)
B. \(1500 cm ^{3}\)
C. \(3600 cm ^{3}\)
D. \(4000 cm ^{3}\)

Question 1057:

Which compound will not decompose when heated strongly?

A. \(CaCO _{3}\)
B. \(K _{2} CO _{3}\)
C. \(NaHCO _{3}\)
D. \(MgCO _{3}\)

Question 1058:

Which of these processes involves using \(CO _{2}\) to produce \(Na _{2} CO _{3}\) ?

A. Solvay process
B. Bosch process
C. Frasch process
D. Contact process

Question 1059:

Sodium hydroxide pellets are ____________

A. Effervescent
B. Deliquescent
C. Hydroscopic
D. Efflorescent

Question 1060:

A gas \(X\) diffuses twice as fast as gas \(Y\). If the relative molecular mass of \(X\) is 32 , what is the relative molecular mass of \(Y\) ?

A. 256
B. 16
C. 128
D. 64