MCQ 1 Statement (i) : A homogeneous rock material is one in which the physical properties for all of its parts or elements are the same.

Statement (ii) : As isotropic material is one that has the same physical proper-ties in every direction at any point.

Statement (iiii) : An anisotropic material is one with certain of its properties varying with direction at any point.

Statement (iv) : Heterogeneity is a characteristics of a material or a force field signifying that the material has properties which vary with position within it.

Out of the above statements, which is correct

(A) Only (i) is correct (B) All are correct (C) None is correct (D) Only (i) and (iv) are correct.

MCQ 2 Total core Recovery = 265 cm, Total Core Run = 300 cm, Modified Core Recovery = 242 cm. Find R.Q.D. 

(A) 88.3% (B) 87% (C) 80.7% (D) None

MCQ 3 Bearing capacity depends on:

Statement (i) : Depth of footing

Statement (ii) : Width of footing

Statement (iii) : Unit weight of rock mass

Statement (iv) : Angle of internal friction

Out of the above statements :

(A) None is correct (B) All are correct (C) Only (i) and (ii) are correct (D) Only (i) and (iv) are correct

MCQ 4 Increase in moisture content of rock

(A) Increase its bearing capacity (B) Decreases its bearing capacity (C) No effect on bearing capacity of the rock (D) None

MCQ 5 In addition to the environment, rock strength depends on the following

Statement (i) : Size of the rock specimen

Statement (ii) : Rate of loading

Statement (iii) : Cycle of loading

Statement (iv) : Loading condition.

Out of the above statements

(A) (i) and (ii) are correct (B) (iii) and (iv) are correct (C) All are correct (D) None is correct.

MCQ 6 Statement (i) : The moisture content of a rock sample is defined as the ratio of weight of water in the voids to the weight of total mass.

Statement (ii) : Bearing capacity increases air with increase in degree of saturation.

Statement (iii) : Degree of saturation is defined as the volume of water in the voids to the total volume of the rock sample.

Statement (iv) : Permeability refers to the ability of a porous material to allow a liquid to pass through its pores.

Out of the above statements

(A) All are correct (B) None is correct (C) Only (iv) is correct (D) Only (i) is correct

MCQ 7 Mechanical properties which are of interest in rock mechanics are: Strength, Deformability, Elasticity and

(A) Hardness (B) Porosity (C) Moisture content (D) Swelling

MCQ 8 Porosity of a rock sample is defined as ratio of the volume of void to the

(A) Volume of solids (B) Volume of air (C) Volume of water (D) Total volume of sample

MCQ 9 Mechanical properties of a rock mass depends on the following factors

Statement (i) : The mechanical properties of individual elements constituting the system.

Statement (ii) : The sliding friction along the planes of weakness.

Statement (iii) : The configuration of the system with respect to direction of loading

Statement (iv) :  The induced stress condition inside the mass.

Out of the above statements :

(A) Only (iv) is correct. (B) Only (i) is correct (C) None is correct (D) All are correct

MCQ 10 Length to diameter ratio for bending test is kept as

(A) 2 to 3 (B) 3 to 7 (C) 2 to 10 (D) 1 to 2

MCQ 11 Length to diameter ratio for compressive strength test is kept as

(A) 3 to 7 (B) 2 to 10 (C) 2 to 3 (D) 5 to 10

MCQ 12 Which of the following statements is correct cooice?

(A) Most of the rocks exhibit only instantaneous deformation (B) Most of the rocks exhibits only delayed deformation (C) Most of the rocks exhibit neither instantaneous nor delayed deformation (D) Most of the rocks exhibits both instantaneous and delayed deformations.

MCQ 13 Which of the following statements is correct choice?

(A) Decrease in strain during course of time is defined as creep (B) Increase in strain during application of load is defined as creep instantaneous (C) Instantaneous increase in strain during application of load is defined as creep (D) Increase in strain during the course of time under constant stress is defined as creep.

MCQ 14 Which of the following statements is correct ? 

(A) Creep occurs due to elastic deformation (B) Creep occurs due to increase in temperature (C) Creep occurs due to plastic deformation (D) Creep occurs due to decrease in temperature.

MCQ 15 Statement (i) : The creep phenomenon in rock is explained due to cracking in the rock mass

Statement (ii) : The creep phenomenon in rock is explained due to mass flow

Statement (iii) : The creep phenomenon in rock is explained due to cracking and mass flow

Out of the above statements

(A) Only (i) is correct (B) Only (ii) is correct (C) Only (iii) is correct (D) None is correct.

MCQ 16 Statement (i) :  The creep has got three parts: primary creep, secondary creep and tertiary creep

Statement (ii) :  Primary creep is followed by tertiary creep and secondary creep

Statement (iii) : Tertiary creep is followed by primary and secondary creep

Statement (iv) : Primary creep is followed by secondary creep and tertiary creep.

Out of the above statement :

(A) (i) and (ii) are correct (B) (i) and (iii) are correct (C) None is correct (D) (i) and (iv) are correct

MCQ 17 The fracture interference is a unique function of

(A) Shear stress (B) Normal Stress (C) Both shear stress and normal stress (D) None of the two

MCQ 18 Statement (i) :  Rocks fail by splitting, shear or combination of these

Statement (ii) : Failure of rock is either ductile or brittle and it depends upon the amount of temperature

Statement (iii) : Fracture of rock is either ductile or brittle and it depends upon the amount of confining pressure

Statement (iv) : Shear failure occurs in a rock if confining pressures are sufficiently high to prevent splitting.

Out of above statements. which choice is correct.

(A) All are correct (B) All are correct except (ii) (C) All are correct except (iii) (D) All are correct except (iv)

MCQ 19 Shear strength of rock is a function of

(A) Cohesion (B) Internal friction (C) Dilatancy (D) All of three

MCQ 20 Rocks fail by

(A) Splitting (B) Shear (C) Combination of splitting and Shear (D) None of these

MCQ 21 Factors influencing ware velocity are

Statement (i) : Water content of the rock mass

Statement (ii) : Temperature of the rock mass

Statement (iii) : Direction of propogation with respect to stratification of thE rock

Statement (iv) : Porosity of the rock mass

Out of the above statements

(A) All are correct except (i) (B) All are correct except (C) None is correct (D) All are correct

MCQ 22 Which Statement iscorrect.

Statement (i) : Propogation of velocity of stress wave in rock increases with an increase of pressure

Statement (ii) : Propagation of velocity of stress wave in rock decreases with an increase of pressure

Statement (iii) : Propagation of velocity of stress wave in rock remains same even if there is an increase of pressure.

(A) Only (i) is correct (B) Only (ii) is correct (C) Only (iii) is correct (D) None is correct

MCQ 23 Which Statement is correct. When a rock cavity is to be bolted, following informations are necessary for proper design of the bolting system.

Statement (i) : Type of rock surrounding the cavity

Statement (ii) : Type of fractures and filled up materials in the joint

Statement (iii) : Geometry of the joints

Statement (iv) : Rock pressure

(A) (i) and (ii) are correct (B) None is correct (C) All are correct (D) (ii) and (iv) are correct

MCQ 24 Grouting activities are carried out for

(A) Strengthening (B) Water sealing (C) Strengthening and water sealing (D) Strengthening and/or water sealing.

MCQ 25 Cement-water grout comes in the category of

(A) Emulsion (B) Solution (C) Suspension (D) None of three