Which is/are the impurities which are present in ores?
- Gangue
- Slag
- Minerals
- Flux
Submitted by :- Muhammad Nawaz
The rate of E1 reaction depends upon______________________?
A. the concentration of substrate
B. the concentration of nucleophile
C. the concentration of substrate as well as nucleophile
D. base the concentration of substrate as well as nucleophile
Submitted by :- Jamil Ahmed
What is the order of kinetics in the SN1 mechanism ?
A. Zero
B. First
C. Second
D. Third
Submitted by :- Jamil Ahmed
Stainless steel consists of elements like ________.
- Fe & Ni
- Cr only
- Fe, Ni & Cr
- Fe only
Submitted by :- Muhammad Nawaz
What will be the order of reaction of a reaction whose rate can be expressed as R = K [A] [B] ?
A. Zero
B. One
C. Two
D. Three
Submitted by :- Jamil Ahmed
The number of molecules taking part in the rate determining step is called___________________?
A. Order of reaction
B. Rate of reaction
C. Mole of a reaction
D. Extent of a reaction
Submitted by :- Jamil Ahmed
Which of the following is the purest form of iron?
- Steel
- Wrought iron
- Pig iron
- Cast iron
Submitted by :- Muhammad Nawaz
Ethyl chloride with nascent hydrogen produces_________________?
A. methane
B. ethane
C. propane
D. butane
Submitted by :- Jamil Ahmed
Which C-X bond has the highest bond energy per mole ?
A. C-F
B. C-C
C. C-Br
D. C-I
Submitted by :- Jamil Ahmed
Which of the following process is used to get pure Al (99.99%)?
[A] Hall’s process
[B] Serpek’s process
[C] Hopp’s process
[D] Bayer’s processSubmitted by :- Muhammad Nawaz