Uptron (likely referring to Plasma or Ionization): MCQ Test (25 questions)

Question 1 of 25

The role of a catalyst in a chemical reaction is to change

Aheat of reaction
Boutput of the reaction
Cactivation energy
Dequilibrium constant

Question 2 of 25

The catalyst used in the preparation of sulfur (H²SO⁴) in the contact process is

APb
BFe + Mo
CV²O⁵
DCO + Ni

Question 3 of 25

When the physical states of both reactants and catalyst are the same, it is called catalyst.

Aheterogeneous catalyst
Bhomogeneous catalyst
CCatalytic poison
DApostle Umerk

Question 4 of 25

Bio-Catalyst is—

Aamino acids
BC⁶H¹²O⁶
CN²
Denzymes

Question 5 of 25

positive catalyst is one which

Adecrease the rate of reaction
Bincreases the rate of reaction
Ckeep the rate of the reaction unchanged
Dbehave as an induced stimulus

Question 6 of 25

It is used as a stirrer in the lead chamber process.

AOxides of nitrogen
BPlatinum
CNickel
DMnO²

Question 7 of 25

It is used as a catalyst in the contact process of making sulphuric acid.

Airon powder
Bplatinum powder
COxides of nitrogen
DNickel metal

Question 8 of 25

When the physical states of both the reactants and the catalyst are different, then the catalyst is called

Ahomogeneous riser
Bheterogeneous fermenter
CInduced Catalysis
Dstimulant poison

Question 9 of 25

Who discovered the catalyst?

ABergicius
BRutherford
CLewis
DKossel

Question 10 of 25

Catalytic Poison is

Averb inhibitor
Bself-lifting
CSamang Urak
Dheterogeneous catalyst

Question 11 of 25

It acts as a catalyst in the Haver process of ammonia production.

ANickel
BIron
CPlatinum
DMolybdenum

Question 12 of 25

When potassium chlorate is heated, it decomposes into potassium chloride and oxygen. When manganese dioxide is added, the reaction is accelerated. This is because

AManganese dioxide decomposes to release oxygen
BManganese dioxide reacts with heat
CManganese dioxide produces good contact
DManganese dioxide acts as an emulsifier.

Question 13 of 25

If a product acts as a catalyst in a reaction, it is called

Ahomogeneous riser
Bheterogeneous catalyst
Cself-motivating
DInduced Catalysis

Question 14 of 25

How does 'catalytic poison' work?

Aby chemical combination with a catalyst
Bby combining with free valencies on the catalyst surface
Cby combining with a reactant
Dby coagulating the catalyst

Question 15 of 25

Which of the following elements prove to be good catalysts?

ATransition elements
Balkali metals
Calkali metals
Dcolored metal

Question 16 of 25

A catalyst is a substance that slows down the rate of a chemical reaction.

Aincreases
Breduces
Cconverts
Dnone of these

Question 17 of 25

Which of the following is correct regarding a catalyst? 1. It increases the rate of reaction 2. It increases the activation energy 3. It decreases the activation energy 4. It is consumed in the reaction

ACodes: 1 and 2
B1 and 3
C1 and 4
D3 and 4

Question 18 of 25

acts as a promoter

Aincreasing the surface energy of the catalyst
Bmaking the catalyst surface more uneven
CMaking the catalyst surface smoother than before
DIncreasing the rate of analysis of page packages

Question 19 of 25

In which process vanadium pentoxide is used as a catalyst?

Acontact process
BHavers process
CSolvay process
Dlead chamber process

Question 20 of 25

The catalyst used in the hydrogenation of oils is

AFe
BNi
CMo
DPt

Question 21 of 25

Which enzyme converts glucose into alcohol?

AZymes
BInversion
CMaltem
DDiastase

Question 22 of 25

It is used as a catalyst in the Deacon process of preparing chlorine gas.

AOxides of nitrogen
BHot Alumina
CCupric Chloride
Diron powder

Question 23 of 25

Which substance acts as a poison for the Pt catalyst in the contact process of manufacturing sulfuric acid?

ASulphur
Barsenic oxide
CCO²
Darsenic sulfide

Question 24 of 25

A negative catalyst is one that

Adecrease the rate of reaction
Bincreases the rate of reaction
Ckeep the rate of the reaction unchanged
Dbehaves as an induced catalyst

Question 25 of 25

Which of the following substances acts as an inhibitor for the iron (Fe) catalyst in the Haber process of ammonia?

ACo²
BNo
CH2
DCo