MCQOPTIONS
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MCQOPTIONS
This section includes 5314 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
LDPE is more prone to oxidation than HDPE. State true or false. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 802. |
The 8255 can be programmed in any of the __________ |
| A. | 2 modes |
| B. | 3 modes |
| C. | 4 modes |
| D. | 5 modes |
| Answer» D. 5 modes | |
| 803. |
8255 has handshaking capability? |
| A. | yes |
| B. | no |
| C. | cant be said |
| D. | depends on the conditions |
| Answer» B. no | |
| 804. |
8255 is a ____ pin IC. |
| A. | 16 |
| B. | 8 |
| C. | 40 |
| D. | 60 |
| Answer» D. 60 | |
| 805. |
How many pins of the 8255 can be used as the I/O ports? |
| A. | 8 |
| B. | 16 |
| C. | 24 |
| D. | 32 |
| Answer» D. 32 | |
| 806. |
What is correct about the BSR mode from below? |
| A. | In BSR mode, only the individual bits of PORT A can be programmed |
| B. | In BSR mode, only the individual bits of PORT B can be programmed |
| C. | In BSR mode, only the individual bits of PORT C can be programmed |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 807. |
Why MOVX instruction is being used to access the ports of the 8255? |
| A. | because 8255 is connecting a microcontroller in memory mapped I/O configuration |
| B. | because 8255 is used to access the external communication |
| C. | because 8255 is used to access the data transfer |
| D. | because 8255 is used to access the interfacing of LCD, motor etc |
| Answer» B. because 8255 is used to access the external communication | |
| 808. |
What is the value of the control register when RESET button is set to zero? |
| A. | 0x00H |
| B. | 0xFFH |
| C. | 0x11H |
| D. | value remains the same |
| Answer» E. | |
| 809. |
Which pins are used to select the ports and the control register? |
| A. | CS |
| B. | A1 |
| C. | A0 |
| D. | All of the mentioned |
| Answer» E. | |
| 810. |
Find the control word for PA= out, PB= in, PCL=out, PCH=out (Mode0)? |
| A. | 0x02H |
| B. | 0x82H |
| C. | 0x83H |
| D. | 0x03H |
| Answer» C. 0x83H | |
| 811. |
Which pins of a microcontroller are directly connected with 8255? |
| A. | RD |
| B. | WR |
| C. | D0-D7 |
| D. | All of the mentioned |
| Answer» E. | |
| 812. |
The 8255 is a ______ chip. |
| A. | Input/Output |
| B. | Analog to Digital |
| C. | Digital to analog |
| D. | None of the mentioned |
| Answer» B. Analog to Digital | |
| 813. |
Which of the following iron carbon mixture, is the product of air cooling? |
| A. | Coarse pearliite |
| B. | Fine pearlite |
| C. | Bainite |
| D. | Martensite |
| Answer» C. Bainite | |
| 814. |
Which of the following iron carbon mixture, is the product of water cooling? |
| A. | Coarse pearliite |
| B. | Fine pearlite |
| C. | Bainite |
| D. | Martensite |
| Answer» E. | |
| 815. |
Which of the following iron carbon mixture, is the product of furnace cooling? |
| A. | Coarse pearliite |
| B. | Fine pearlite |
| C. | Bainite |
| D. | Martensite |
| Answer» B. Fine pearlite | |
| 816. |
The FCC structure of Fe-C solid solution is known as __________ |
| A. | Ferrite |
| B. | Cementite |
| C. | Pearlite |
| D. | Austenite |
| Answer» E. | |
| 817. |
The BCC structure of Fe-C solid solution is known as ______________ |
| A. | Ferrite |
| B. | Cementite |
| C. | Pearlite |
| D. | Austenite |
| Answer» B. Cementite | |
| 818. |
The eutectoid mixture of α+Fe3C is known as ______________ |
| A. | Ferrite |
| B. | Pearlite |
| C. | Cementite |
| D. | Austenite |
| Answer» C. Cementite | |
| 819. |
Which of the following material has the carbon varying from 4.3 to 6.67%? |
| A. | Pig iron |
| B. | Mild steel |
| C. | Medium carbon steel |
| D. | Cast iron |
| Answer» B. Mild steel | |
| 820. |
Which of the following material has the carbon varying from 2.1 to 4.3%? |
| A. | Dead steel |
| B. | Mild steel |
| C. | Medium carbon steel |
| D. | Cast iron |
| Answer» E. | |
| 821. |
State whether the following statement is true or false about Magnetic abrasive finishing.“Higher rates of material removal are obtained, with an increase in amplitude and frequency.” |
| A. | True |
| B. | False |
| Answer» B. False | |
| 822. |
State whether the following statement is true or false about magnetic abrasive finishing.“Increasing the magnetic flux density raises the rate of material removal in finishing.” |
| A. | True |
| B. | False |
| Answer» B. False | |
| 823. |
Which of the following statement is correct for the method of separation of large molecules? |
| A. | The large DNA molecules can pass through the matrix in any direction, not necessarily in the direction parallel to the movement |
| B. | The separation can be carried out if the fields are at right angles to each other |
| C. | The time of pulse should be less than that of the reorientation time |
| D. | Separation is not of the megabase level |
| Answer» C. The time of pulse should be less than that of the reorientation time | |
| 824. |
If the molecules to be separated are larger than the size for conventional electrophoresis, which type of gels can be used? |
| A. | Wedge gels |
| B. | Buffer-gradient gels |
| C. | Pulse field gels |
| D. | Varying the amount of agarose will carry out the separation |
| Answer» D. Varying the amount of agarose will carry out the separation | |
| 825. |
The DNA is sliced and is placed into the dialysis tube containing buffer. Further electrophoresis is performed. After it, the DNA moves out of the gel but is retained by buffer. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 826. |
If further electrophoresis is used for recovery of DNA from gels, the method is termed as ____________ |
| A. | secondary electrophoresis |
| B. | recovery electrophoresis |
| C. | denaturing electrophoresis |
| D. | electro-elution |
| Answer» E. | |
| 827. |
A piece of DNA that is to be separated is crushed and soaked into the buffer. The majority of DNA diffuses, how can it be separated? |
| A. | Filtration and centrifugation |
| B. | Filtration or centrifugation |
| C. | Allowing to sediment |
| D. | By passing through a silica column |
| Answer» C. Allowing to sediment | |
| 828. |
ASCII stands for _____________________ |
| A. | American standard code for information interchange |
| B. | American scientific code for information interchange |
| C. | American scientific code for international interchange |
| D. | American standard code of international interchange |
| Answer» B. American scientific code for information interchange | |
| 829. |
Perfrom BCD addition: 2+3= _______________ |
| A. | 0010 |
| B. | 0011 |
| C. | 0101 |
| D. | 1010 |
| Answer» D. 1010 | |
| 830. |
1 zettabyte = ______________ |
| A. | 1024 TB |
| B. | 1024 EB |
| C. | 1024 ZB |
| D. | 1024 PB |
| Answer» C. 1024 ZB | |
| 831. |
What does BCD stand for? |
| A. | Bitwise coded decimal |
| B. | Binary coded decimal |
| C. | Binary converted decimal |
| D. | Bitwise Converted Decimal |
| Answer» C. Binary converted decimal | |
| 832. |
The 2’s complement of 5 is ______________ |
| A. | 1011 |
| B. | 0101 |
| C. | 1010 |
| D. | 0011 |
| Answer» B. 0101 | |
| 833. |
Which of the following is not a type of number system? |
| A. | Positional |
| B. | Non-Positional |
| C. | Octal |
| D. | Fractional |
| Answer» E. | |
| 834. |
Linear encoders gives ___________ output. |
| A. | angular |
| B. | analog |
| C. | digital |
| D. | unstable |
| Answer» C. digital | |
| 835. |
Which of the following is a displacement transducer? |
| A. | Thermistor |
| B. | LVDT |
| C. | Strain gauge |
| D. | Thermocouple |
| Answer» C. Strain gauge | |
| 836. |
LVTD is a _______ transducer. |
| A. | displacement |
| B. | photoelectric |
| C. | thermal |
| D. | chemical |
| Answer» B. photoelectric | |
| 837. |
In LVDT the secondary coils are energized with sine wave oscillator. |
| A. | True |
| B. | False |
| Answer» C. | |
| 838. |
LVDT stands for _________ |
| A. | Linear Virtual Double Transformer |
| B. | Linear Virtual Differential Transducer |
| C. | Linear Variable Differential Transducer |
| D. | Linear Variable Differential Transformer |
| Answer» E. | |
| 839. |
Lateral displacement of capacitance plates with respect to each other gives linear displacement capacitance characteristics. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 840. |
Potentiometer works on which of the following principle? |
| A. | variable resistance |
| B. | variable inductance |
| C. | variable capacitance |
| D. | variable electromagnet |
| Answer» B. variable inductance | |
| 841. |
What is the average equilibrium radical concentration in the aqueous medium in emulsion polymerization? |
| A. | 108 radical/cm3 |
| B. | 1013 radical/cm3 |
| C. | 105 radical/cm3 |
| D. | 1015 radical/cm3 |
| Answer» B. 1013 radical/cm3 | |
| 842. |
How is the degree of emulsion polymerization related to the monomer concentration, [M] and the rate of radical generation, Ri? |
| A. | directly proportional to [M], inversely proportional to Ri |
| B. | inversely proportional to Ri, directly proportional to [M]. |
| C. | directly proportional to Ri, independent of [M]. |
| D. | directly proportional to [M], independent of Ri |
| Answer» B. inversely proportional to Ri, directly proportional to [M]. | |
| 843. |
What is the size of the monomer droplets in suspension polymerization? |
| A. | 25-30 mm |
| B. | 0.1-5 mm |
| C. | 15-20 mm |
| D. | 50-60 mm |
| Answer» C. 15-20 mm | |
| 844. |
Consider the following circuit. Determine the current flowing in the ammeter having 1Ω internal resistance in series with the 3Ω resistor. |
| A. | 0.6 |
| B. | 0.7 |
| C. | 0.8 |
| D. | 0.9 |
| Answer» B. 0.7 | |
| 845. |
Consider the following circuit. Determine the current flowing in the ammeter having 1Ω internal resistance in series with the 6Ω resistor. |
| A. | 0.1 |
| B. | 0.2 |
| C. | 0.3 |
| D. | 0.4 |
| Answer» D. 0.4 | |
| 846. |
Determine the current flowing in the ammeter having 1Ω internal resistance connected in series with the 6Ω resistor as shown in the below circuit. |
| A. | 0.4 |
| B. | 0.45 |
| C. | 0.9 |
| D. | 0.95 |
| Answer» C. 0.9 | |
| 847. |
Find the current through 6Ω resistor in the circuit shown below. |
| A. | 0.33 |
| B. | 0.44 |
| C. | 0.55 |
| D. | 0.66 |
| Answer» D. 0.66 | |
| 848. |
Determine the current flowing in the ammeter having 1Ω internal resistance connected in series with the 3Ω resistor as shown in the below circuit. |
| A. | 0.91 |
| B. | 0.92 |
| C. | 0.93 |
| D. | 0.94 |
| Answer» D. 0.94 | |
| 849. |
Find the current through 3Ω resistor in the circuit shown below. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 850. |
Reciprocity Theorem is applied for _____ networks. |
| A. | Linear |
| B. | Bilateral |
| C. | Linear bilateral |
| D. | Lumped |
| Answer» D. Lumped | |