Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below<br><img src="/images/question-image/engineering-chemistry/s-block-and-p-block-elements/1689830148-pyroxenes-are-class-of-silicate-minerals-which.png" title="S-Block and P-Block Elements mcq question image" alt="S-Block and P-Block Elements mcq question image"><br>Its simplest repeating unit is

Two dielectric materials A and B exhibit both ionic and orientational polarizabilities. The variation of their susceptibilities $$\chi \left( { = {\varepsilon _r} - 1} \right)$$ with temperature T is shown in the figure, where $${\varepsilon _r}$$ is the relative dielectric constant. It can be inferred from the figure that
Solid State Physics mcq question image

A

A is more polar and it has a smaller value of ionic polarizability than that of B

B

A is more polar and it has a higher value of ionic polarizability than that of B

C

B is more polar and it has a higher value of ionic polarizability than that of A

D

B is more polar and it has a smaller value of ionic polarizability than that of A

The band structure in an n-type semiconductor is
Chemical Bonding and Molecular Structure mcq question image

A

I

B

II

C

III

D

IV

Which of the following statements about minerals are correct? (A) Minerals are created by natural processes without any human interference (B) Mica and chromite are nonferrous minerals (C) Minerals lying at shallow depths are taken out through open cast mining (D) Minerals are a non-renewable resource

A

A, B and C

B

B, C and D

C

A, B and D

D

A, C and D

There are five classes class 1, class 2, class 3, class 4 and class 5 in a school. They are one above the other. Class 1 is at the bottom, then class 2 above it and so on. Five videos M1, M2, M3, M4 and M5 are displayed in these given classes. Only one video is displayed in a particular class. Each video is displayed only one time. Video M5 is displayed at an even numbered class. Video M2 is displayed at class 1. Video M1 is displayed at the class just below M5. Video M4 is not displayed at even numbered class. Which of the following statement is not correct?

A

Only one video is displayed after M3

B

Only two videos are displayed above M1

C

Only one video is displayed between M2 and M5

D

M1 is displayed between M3 and M5

Consider the following two C code segment. Y and X are one- and two-dimensional arrays of size n and n × n respectively, where 2 ≤ n ≤ 10. Assume that in both code segments, elements of y are initialized to 0 and each element X[i] [j] of array X is initialized to i + j. Further assume that when stored in main memory all elements of x are in same main memory page frame. Code segment 1: //initialize elements of y to 0 //initialize elements X[i] [j] of X to i+j for (i = 0; i < n; i++) Y[i] += X[0] [i]; Code Segment 2: //initialize elements of Y to 0 //initialize elements X[i] [j] of X to i+j for (i = 0; i < n; i++) Y[i] += X[i] [0]; Which of the following statements is/are correct? S1: Final contents of array Y will be same in both code segments S2: Elements of array X accessed inside the for loop shown in code segment 1 are contiguous in main memory S3: Elements of array X accessed inside the for loop shown in code segment 2 are contiguous in main memory

A

Only S3 is correct

B

Only S2 is correct

C

Only S1 and S2 are correct

D

Only S1 and S3 are correct

Which of the following is/are correct about minerals and rocks (A) Generally metallic minerals are found in igneous and metamorphic rocks. (B) If a rock contains copper then the rock looks blue in color. (C) Al ore minerals are not rocks. (D) All rocks are not ore minerals.

A

Only (A) and (B) are correct

B

Only (C) and (D) are correct

C

Only (A), (B) and (C) are correct

D

Only (A), (B) and (D) are correct

With reference to the management of minor minerals in India, consider the following statements: 1. Sand is a 'minor mineral' according to the prevailing law in the country. 2. State Governments have the power to grant mining leases of minor minerals, but the powers regarding the formation of rules related to the grant of minor minerals lie with the Central Government. 3. State Governments have the power to frame rules to prevent illegal mining of minor minerals. Which of the statements given above is/are correct?

A

1 and 3 only

B

2 and 3 only

C

3 only

D

1, 2 and 3

The function x(t) is shown in the figure. Even and odd parts of a unit-step function u(t) are respectively,
Signal Processing mcq question image

A

$$\frac{1}{2},\frac{1}{2}x\left( t \right)$$

B

$$ - \frac{1}{2},\frac{1}{2}x\left( t \right)$$

C

$$\frac{1}{2}, - \frac{1}{2}x\left( t \right)$$

D

$$ - \frac{1}{2}, - \frac{1}{2}x\left( t \right)$$

A rod of length L with uniform charge density $$\lambda $$ per unit length is in the XY-plane and rotating about Z-axis passing through one of its edge with an angularvelocity $$\overrightarrow \omega $$ as shown in the figure below. $$\left( {{\bf{\hat r}},\,\hat \phi ,\,{\bf{\hat z}}} \right)$$ refer to the unit vectors at Q, $$\overrightarrow {\bf{A}} $$ is the vector potential at a distance d from the origin O along Z-axis for d ≪ L and $$\overrightarrow {\bf{J}} $$ is the current density due to the motion of the rod. Which one of the following statements is correct?
Electromagnetic Theory mcq question image

Electromagnetic Theory mcq question image

A

$$\overrightarrow {\bf{J}} {\text{ along }}{\bf{\hat r}};\overrightarrow {\bf{A}} {\text{ along }}{\bf{\hat z}};\left| {\overrightarrow {\bf{A}} } \right| \propto \frac{1}{d}$$

B

$$\overrightarrow {\bf{J}} {\text{ along }}\hat \phi ;\overrightarrow {\bf{A}} {\text{ along }}\hat \phi ;\left| {\overrightarrow {\bf{A}} } \right| \propto \frac{1}{{{d^2}}}$$

C

$$\overrightarrow {\bf{J}} {\text{ along }}{\bf{\hat r}};\overrightarrow {\bf{A}} {\text{ along }}{\bf{\hat z}};\left| {\overrightarrow {\bf{A}} } \right| \propto \frac{1}{{{d^2}}}$$

D

$$\overrightarrow {\bf{J}} {\text{ along }}\hat \phi ;\overrightarrow {\bf{A}} {\text{ along }}\hat \phi ;\left| {\overrightarrow {\bf{A}} } \right| \propto \frac{1}{d}$$

The phase difference of the waves 1 and 2 at A in the given figure is:
Elements of Remote Sensing mcq question image

A

$$\frac{\pi }{4}$$

B

$$\frac{\pi }{2}$$

C

$$\pi $$

D

$$\frac{{3\pi }}{2}$$

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below

Its simplest repeating unit is

Related Questions

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown belowIts simplest repeating unit is

Related Questions

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below

Its simplest repeating unit is