Consider the following statements. 1. Glass wool has tensile strength greater than steel. 2. Glass wool is fire proof. 3. Glass wool has high electrical conductivity and absorbs moisture. 4. Glass wool is used to prepare libre glass. Which of the statements given above are correct?

A

1, 2, 3 and 4

B

1, 2 and 3

C

1, 2 and 4

D

3 and 4

Consider the following statements.
1. Glass wool has tensile strength greater than steel.
2. Glass wool is fire proof.
3. Glass wool has high electrical conductivity and absorbs moisture.
4. Glass wool is used to prepare libre glass.
Which of the statements given above are correct? Correct Answer 1, 2 and 4

শেয়ার করুন বন্ধুর সাথে

বিসিএস, ব্যাংক, প্রাইমারি সহ সরকারি বেসরকারি চাকুরীর পরীক্ষার প্রস্তুতির জন্য ডাউনলোড করুন Bissoy অ্যাপ

Related MCQ's

Calculate ultimate moment and shear of effective span is 30m, live load is 9kn/m, dead load excluding self weight is 2kn/m, load factors for dead load is 1.4 for live load is 1.6 cube strength of concrete fcu is 50n/mm2 cube strength at transfer is fci is 35n/mm2, tensile strength of concrete Ec is 34kn/mm2 loss ratio ɳ is 0.85 and 8mm diameter high tensile strength fpu is 1500n/mm2 are available for use and the modulus of elasticity of high tensile wires is 200kn/mm2?

A

340 and 450kn

B

240 and 340kn

C

140 and 240kn

D

100 and 200kn

Compared to mild steel, cast iron has
(i) High compressive strength
(ii) High tensile strength
(iii) Low compressive strength
(iv) Low tensile strength

A

(i) and (ii)

B

(ii) and (iii)

C

(iii) and (iv)

D

(i) and (iv)

For better resistance welding, the metal must have
P. high electrical resistivity and low melting point
Q. high thermal conductivity
R. high electrical resistivity and high melting point
S. low thermal conductivity

A

P, Q

B

P, S

C

R, Q

D

R, S

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: All matchboxes are lighters Statement II: Some fire are match boxes Conclusion I: No lighters are fire Conclusion II: All fire are lighters

A

Only conclusion I follows

B

Only conclusion II follows

C

Both conclusions I and II follow

D

Neither conclusion I nor conclusion II follows

In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: No lighters are fire Statement II: All matchboxes are lighters Conclusion I: No fire are match boxes Conclusion II: All matchboxes are fire

A

Only conclusion I follows

B

Only conclusion II follows

C

Both conclusions I and II follow

D

Neither conclusion I nor conclusion II follows

In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into fourparts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations iscorrect. 1. The biggest villain in Deadwood has always been one thing: Fire. P. In less than an hour the flames were leaping through the tree-tops. Q. In our own times, a great fire threatened the town yet again. R. The wind roared through the forest carrying the flames almost to the edge of town. S. It all began when some waste-paper caught fire at the foot of the valley. 6. Fire-brigades arrived from all parts of the country to save Deadwood.

A

RQSP

B

SQPR

C

PSRQ

D

QSPR

Consider the following statements regarding nucleate boiling (i) The temperature of the surface is greater than the saturation temperature of the liquid (ii) Bubbles are created by the expansion of entrapped gas oil vapor at small cavities in the surface (iii) The temperature is greater than that in film boiling (iv) The heat transfer from the surface to the liquid is greater than that in the film boiling Which of these statements are correct?

A

i and iii

B

i, ii and iv

C

ii, iii and iv

D

i, ii and iii

Which of the following statements is/are correct?
1. Felt is made from wool or mixed wool. Matt is dampened and heated and pressure applied to it the wool fibres entangled and form dense material felt.
2. Knitted fabrics can be stretched more than woven fabrics, so can used forrests under weavers socks.

A

1 and 2

B

Only 1

C

Only 2

D

None of these

Directions: Seven different boxes A, B, C, D, E, F and G of different colours viz., Orange, Pink, Purple, Yellow, Blue, Red and Green are arranged one above the other. The box at the bottom of arrangement is numbered 1, the above box is numbered 2 and so on. B is immediately above E. More than two boxes are above the Orange box. The Yellow box is immediately below A. Only one box is between the Orange box and F. G is immediately above the Red box. Only one box is between B and the Pink box. Only two boxes are between the Pink and the Green box. Only two boxes are between the Yellow box and the Orange box. The Purple box is neither at the top nor at the bottom of the arrangement.B is above Pink box. C is immediately above F. Neither C nor G is a Yellow box. G is not a Orange box. Question: Which combination represents the position of C and its colour?

A

6-Green

B

6-Red

C

5-Purple

D

7-Blue

Consider the following statements:
1. The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean.
2. The annual range of temperature is greater in the Northern Hemisphere than that in the Southern Hemisphere.
Which of the statements given above is/are correct?

A

1 only

B

2 only

C

Both 1and 2

D

Neither 1 nor 2