MCQOPTIONS
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MCQOPTIONS
This section includes 2114 Mcqs, each offering curated multiple-choice questions to sharpen your Unit Processes knowledge and support exam preparation. Choose a topic below to get started.
| 901. |
Which of the following is a feature of a lac repressor? |
| A. | It is a dimer |
| B. | It is a trimer |
| C. | It is a monomer |
| D. | It is a tetramer |
| Answer» E. | |
| 902. |
Which of the following interactions majorly imparts specificity to most of the protein-DNA contacts? |
| A. | Hydrophobic interaction |
| B. | Covalent interactions |
| C. | Disulfide bonds |
| D. | Hydrogen bonds |
| Answer» E. | |
| 903. |
Which of the following proteins have discrete DNA-binding domains? |
| A. | Excretory proteins |
| B. | Plasma membrane proteins |
| C. | Catalytic proteins |
| D. | Regulatory proteins |
| Answer» E. | |
| 904. |
Considering the specificity of the protein-DNA interaction in the case of regulatory proteins it can be concluded that there is a particular amino acid-base code. |
| A. | True |
| B. | False |
| Answer» C. | |
| 905. |
In a mechanism, the fixed instantaneous centres are those centres which |
| A. | remain in the same place for all configurations of the mechanism |
| B. | vary with the configuration of the mechanism |
| C. | moves as the mechanism moves, but joints are of permanent nature |
| D. | none of the mentioned |
| Answer» B. vary with the configuration of the mechanism | |
| 906. |
According to Aronhold Kennedy’s theorem, if three bodies move relatively to each other, their instantaneous centres will lie on a |
| A. | straight line |
| B. | parabolic curve |
| C. | ellipse |
| D. | none of the mentioned |
| Answer» B. parabolic curve | |
| 907. |
The total number of instantaneous centres for a mechanism consisting of n links are |
| A. | n/2 |
| B. | n |
| C. | n – 1/2 |
| D. | n(n – 1)/2 |
| Answer» E. | |
| 908. |
The minimum number of links in a single degree-of-freedom planar mechanism with both higher and lower kinematic pairs is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 909. |
When a cylinder is located in a Vee-block, the number of degrees of freedom which are arrested is |
| A. | 2 |
| B. | 4 |
| C. | 7 |
| D. | 8 |
| Answer» C. 7 | |
| 910. |
The lengths of the links of a 4-bar linkage with revolute pairs are p,q,r, and s units. given that p |
| A. | link of length p |
| B. | link of length q |
| C. | link of length r |
| D. | link of length s |
| Answer» B. link of length q | |
| 911. |
In a four-bar linkage, S denotes the shortest link length, L is the longest link length, P and Q are the lengths of other two links. At least one of the three moving links will rotate by 3600 if |
| A. | S + L < P + Q |
| B. | S + L > P + Q |
| C. | S + P < L + Q |
| D. | S + P > L + Q |
| Answer» B. S + L > P + Q | |
| 912. |
Match the items in columns I and IIColumn I Column IIP. Higher Kinematic Pair 1. Grubler’s EquationQ. Lower Kinemation Pair 2. Line contactR. Quick Return Mechanism 3. Euler’s EquationS. Mobility of a Linkage 4. Planar 5. Shaper 6. Surface contact |
| A. | P-2, Q-6, R-4, S-3 |
| B. | P-6, Q-2, R-4, S-1 |
| C. | P-6, Q-2, R-5, S-3 |
| D. | P-2, Q-6, R-5, S-1 |
| Answer» E. | |
| 913. |
Match the item in columns I and II Column I Column IIP. Addendum 1. CamQ. Instantaneous centre of velocity 2. BeamR. Section modulus 3. LinkageS. Prime circle 4. Gear |
| A. | P-4, Q-2, R-3, S-1 |
| B. | P-4, Q-3, R-2, S-1 |
| C. | P-3, Q-2, R-1, S-4 |
| D. | P-3, Q-4, R-1, S-2 |
| Answer» C. P-3, Q-2, R-1, S-4 | |
| 914. |
For a four-bar linkage in toggle position, the value of mechanical advantage is |
| A. | 0 |
| B. | 0.5 |
| C. | 1.0 |
| D. | ∞ |
| Answer» E. | |
| 915. |
There are two points P and Q on a planar rigid body. The relative velocity between the two points |
| A. | should always be along PQ |
| B. | can be oriented along any direction |
| C. | should always be perpendicular to PQ |
| D. | should be along QP when the body undergoes pure translation |
| Answer» D. should be along QP when the body undergoes pure translation | |
| 916. |
Yield point phenomenon is more marked in annealed low carbon steels. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 917. |
Tensile strength decrease by strain ageing. |
| A. | True |
| B. | False |
| Answer» C. | |
| 918. |
What is the diffusion rates of carbon and nitrogen atoms markedly dependent on? |
| A. | Temperature |
| B. | Load |
| C. | Crystal structure |
| D. | Fatigue strength |
| Answer» B. Load | |
| 919. |
A material is a fatigue tested below the fatigue limit for few millions of cycles and then retested at higher than fatigue limit. This process is known as ___________ |
| A. | Under stressing |
| B. | Coaxing |
| C. | Bridging |
| D. | Toughening |
| Answer» C. Bridging | |
| 920. |
Fatigue strength of iron and steel _________ with an increase in temperature. |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» E. | |
| 921. |
The phenomena of “position effects” in transgenic mice is related to which of the following? |
| A. | Integrated transgenes |
| B. | Promoters |
| C. | Proteins |
| D. | Inducers |
| Answer» B. Promoters | |
| 922. |
HMG gene is the hybrid between MMT promoter and _______________ hormone. |
| A. | Insulin |
| B. | Cancer |
| C. | Rat death |
| D. | Rat growth |
| Answer» E. | |
| 923. |
How many approximate copies of the MK gene were present in transgenic mice expressing the gene? |
| A. | 50 |
| B. | 100 |
| C. | 150 |
| D. | 200 |
| Answer» D. 200 | |
| 924. |
The MK gene used in the development of transgenic mice was injected into fertilized eggs in the presence or absence of _________ ions. |
| A. | Calcium |
| B. | Cadmium |
| C. | Phosphorus |
| D. | Sulphur |
| Answer» C. Phosphorus | |
| 925. |
Genetically modified mice can be used to address various aspects of gene function and __________ |
| A. | Transcription |
| B. | Regulation |
| C. | Inactivity |
| D. | Temperature gradient |
| Answer» C. Inactivity | |
| 926. |
Below the critical radius the tiny particles are _______ and are called _______ |
| A. | unstable, grains |
| B. | stable, grains |
| C. | unstable, embryo |
| D. | stable, embryo |
| Answer» D. stable, embryo | |
| 927. |
Which is the most important thermodynamic parameter in Homogenous nucleation? |
| A. | Free energy G |
| B. | Enthalpy H |
| C. | Entropy S |
| D. | Free energy G, Enthalpy H, Entropy S |
| Answer» B. Enthalpy H | |
| 928. |
From the following figure if blue curve represent growth rate what does red and green curve represent respectively? |
| A. | Nucleation rate, over all transformation rate |
| B. | Over all transformation rate, Nucleation rate |
| C. | Nucleation rate, finer grain size |
| D. | Over all transformation rate, finer grain size |
| Answer» B. Over all transformation rate, Nucleation rate | |
| 929. |
What is/are the phenomenon involved in phase transformation? |
| A. | Nucleation |
| B. | Growth |
| C. | Fission |
| D. | Nucleation and growth |
| Answer» E. | |
| 930. |
In which of the following organism does iron secreted to form stalks or ribbons attached to the cell? |
| A. | Sphaerotilus |
| B. | Gallionella |
| C. | Thiobacillus |
| D. | Streptococcus |
| Answer» C. Thiobacillus | |
| 931. |
Thiobacillus can produce an acidity in the range of pH __________ |
| A. | 7 |
| B. | 5 |
| C. | 3 |
| D. | 1 |
| Answer» E. | |
| 932. |
Among the following which microorganism acts as a representative of fecal streptococci group? |
| A. | Streptococcus faecalis |
| B. | Streptococcus bovis |
| C. | Streptococcus equinus |
| D. | Streptococcus faecium |
| Answer» B. Streptococcus bovis | |
| 933. |
The coliform group of bacteria includes all the __________________ bacilli. |
| A. | aerobic |
| B. | anaerobic |
| C. | aerobic, non-sporulating |
| D. | aerobic, gram-negative, non-sporulating |
| Answer» E. | |
| 934. |
Which of the following forms of water is the most contaminated? |
| A. | Underground water |
| B. | Rainwater |
| C. | Surface water |
| D. | Water stored in ice caps |
| Answer» D. Water stored in ice caps | |
| 935. |
By the use of reinforcing elements in earth __________ |
| A. | it restrains lateral deformation |
| B. | it provides lateral deformation |
| C. | it produces shear stress |
| D. | it produces shear failure |
| Answer» B. it provides lateral deformation | |
| 936. |
In design of reinforced earth wall, the Rankine’s earth pressure is valid. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 937. |
The reinforced earth structures can be transported easily. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 938. |
In general, the reinforced earth structures are ________ |
| A. | flexible |
| B. | stiff |
| C. | rigid |
| D. | firm |
| Answer» B. stiff | |
| 939. |
The wall facing element is also known as _______ |
| A. | plaster |
| B. | POP |
| C. | skin |
| D. | coat |
| Answer» D. coat | |
| 940. |
The soil used in the backfill should have particles of not more than _____ passing 63 μm sieve. |
| A. | 10% |
| B. | 20% |
| C. | 30% |
| D. | 40% |
| Answer» B. 20% | |
| 941. |
In general from the data on galvanised steel, it has a service life of _____ in soil. |
| A. | 2 days |
| B. | 120 months |
| C. | 10 years |
| D. | 120 years |
| Answer» E. | |
| 942. |
In reinforcing elements, galvanised steel strips of _________ width and ____ thickness are used commonly. |
| A. | 50 to 100 mm, 9mm |
| B. | 50 to 70 mm, 20mm |
| C. | 110 to 180 mm, 30mm |
| D. | 200 to 310 mm, 40mm |
| Answer» B. 50 to 70 mm, 20mm | |
| 943. |
The reinforcement members are used to provide _______ in earth mass where _____ are produced. |
| A. | tensile strength, compressive stresses |
| B. | tensile strength, shear stresses |
| C. | compressive strength, tensile stresses |
| D. | shear strength, tensile stresses |
| Answer» C. compressive strength, tensile stresses | |
| 944. |
The modern form of application of reinforced earth was first developed by _____ |
| A. | Darcy |
| B. | Skempton |
| C. | Henry Vidal |
| D. | Marshal |
| Answer» D. Marshal | |
| 945. |
______ is developed in reinforcement. |
| A. | Friction |
| B. | Tension |
| C. | Compression |
| D. | Shear |
| Answer» C. Compression | |
| 946. |
The essential feature of reinforced earth is that __________ develops between compacted layer of earth and reinforcing elements. |
| A. | friction |
| B. | tension |
| C. | compression |
| D. | shear |
| Answer» B. tension | |
| 947. |
Ford Falcon is an example of _________ |
| A. | Australian muscle car |
| B. | American muscle car |
| C. | Luxury vehicle |
| D. | None of the mentioned |
| Answer» B. American muscle car | |
| 948. |
Mercedes-Benz E Class is ______ |
| A. | A compact minivan |
| B. | An estate car |
| C. | An executive car |
| D. | A compact executive car |
| Answer» D. A compact executive car | |
| 949. |
A Roadster is a convertible with how many seats? |
| A. | One |
| B. | Two |
| C. | Four |
| D. | Six |
| Answer» C. Four | |
| 950. |
Which of these is a ‘Convertible’? |
| A. | Mahindra Scorpio |
| B. | Volkswagen Golf GTI |
| C. | Cadillac XTS |
| D. | Honda S2000 |
| Answer» E. | |