Which of the following is/are true regarding speed of sound in different mediums at 25°C?A. In aluminium, the speed of sound is 6220m/s.B. In nickel, the speed of sound is 6040 m/s.

Which of the following is/are true regarding speed of sound in different mediums at 25°C?<br>A. In aluminium, the speed of sound is 6220m/s.<br>B. In nickel, the speed of sound is 6040 m/s.

Which of the following statement(s) is/are true with respect to the speed of sound at 25°C in different mediums? A. In steel, the speed of sound is 5960 m/s. B. In nickel, the speed of sound is 6040 m/s.

A

Both A and B are true.

B

Only B is true.

C

Neither A nor B is true.

D

Only A is true.

Which of the following statements is true about the speed of sound in different mediums at 25°C?
A. Speed of sound in steel is 5960 km/s.
B. The speed of sound in nickel is 6040 m/s.

A

Only B is true

B

Neither A nor B is true

C

Both A and B are true

D

Only A is true

Which of the following statements is/are true of the speed of sound in different media at 25°C? A. In Aluminium, the speed of sound is 6220 m/s. B. In Nickel speed of sound 6040 m/s.

A

Only B is true

B

Both A and B are true

C

Only A is true

D

Neither A nor B is true

Which of the following statement(s) is/are true regarding the speed of sound at 25°C in different mediums? 1. The speed of sound in aluminum is 6220 m/s. 2. The speed of sound in nickel is 6240 m/s.

A

Both 1 and 2 are true.

B

only 1 is true

C

Neither 1 nor 2 is true.

D

Only 2 is true.

An alloy of nickel and tin has 20 % nickel. Another alloy of nickel and copper has nickel and copper in the ratio 1 ∶ 5. Both the alloys are mixed in the ratio 2 ∶ 5. Quantity of tin is what percent more/less than the quantity of nickel in the final alloy?

A

29.72%

B

25.67%

C

13.45%

D

34.56%

E

13.46%

Which of the following statements about the speed of sound in different mediums is/are true at 25°C?
A. Speed of sound in steel is 5960 m/s.
B. The speed of sound in nickel is 6240 m/s.

A

Only A is correct

B

Neither A nor B is correct

C

Both A and B are correct

D

Only B is correct

Each question comprises of a statement and two conclusions I) and II). Assuming that the statement is true, which of the conclusions follow logically from the statement? Statement: Because of growth in production of Aluminium by National Aluminium Company, India has become self-sufficient in Aluminium. Conclusion: I) Previously India had to import Aluminium. II) At this rate, India may start exporting Aluminium.

A

Only conclusion I) follows

B

Only conclusion II) follows

C

Neither I) nor II) follows

D

Both I) & II) follow

Which one of the following is NOT correctly matched? Aluminium Plants Location (a) Madras Aluminium Company Limited (MALCO) Chennai (b) Bharat Aluminium Company Limited (BALCO) Korba (c) Hindustan Aluminium Corporation Limited (HINDALCO) Renukoot (d) Indian Aluminium Company Limited (INDAL) Hirakud

A

(a)

B

(b)

C

(c)

D

(d)

Which of the following statements is/are true of sound in different media at 25 °C? A. In Aluminium, speed of sound is 6420 m/s B. In Nickel, speed of sound is 6240 m/s

A

Only A is true

B

Neither A nor B is true

C

A and B both are true

D

Only B is true

An alloy of Nickel and Chromium is to be made such that the alloy comprises of 80% Nickel and 20% Chromium. Mixture A comprises of 60% Nickel and 40% Chromium, while mixture B comprises of 90% Nickel and 10% Chromium. In what ratio should the mixtures be mixed in order to obtain the desired alloy?

A

1 ∶ 1

B

1 ∶ 2

C

2 ∶ 1

D

2 ∶ 2

Which of the following is/are true regarding speed of sound in different mediums at 25°C?
A. In aluminium, the speed of sound is 6220m/s.
B. In nickel, the speed of sound is 6040 m/s.

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