Calculate the amount of water to be mixed (ml) with the electrolyte from the give data. Amount of metal oxide used=12 g Amount of electrolyte: 6 ml

Calculate the amount of water to be mixed (in ml) with the electrolyte from the give data. Amount of metal oxide used: 100 g Amount of electrolyte used: 10 ml

A

10

B

20

C

30

D

0

Which of the following statements are true?
Statement I Big data refers to no precise quantity, but generally refers to data in the range of Petabytes and Exabyte, i.e. billions to trillions of records, all from various sources. Big data is generated much faster. than traditional data in much larger quantities.
Statement II Big data interests industries because they are able to learn more patterns and curious variances than smaller data sets, with the capability to provide valuable insights into consumer behaviour, weather systems, financial market activity, or other phenomena.
Statement III Various departments and product lines use various applications within most organisations and store data in separate datasets. These separate databases may contain similar data, but data from one data base to another is not always consistent. This is called data silo.

A

Both statements I and II

B

Both statements II and III

C

Both statements I and III

D

All of the above

Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Quantity A∶ A 30 litre mixture of wine and water has wine and water in the ratio 5∶ 7. How much water must be drawn off so that the ratio of wine and water becomes 25∶ 19? Quantity B∶ A 35 litre mixture of wine and water has wine and water in the ratio 1∶ 3. How much water must be drawn off so that the ratio of wine and water becomes 1.75∶ 3.35? Quantity C∶ A 27 litre mixture of wine and water has wine and water in the ratio 3∶ 2. How much water must be drawn off so that the ratio of wine and water becomes 81∶ 11?

A

A = B = C

B

A > B > C

C

B > C > A

D

A > C > B

E

A < B > C

Consider the following statements with reference to the mixing of industrial waste water with domestic waste water: 1. The industrial waste water can be mixed with domestic water when it has higher BOD. 2. The industrial waste water can be mixed with domestic water when the pH value of industrial waste water is highly alkaline. Which of the above statements is/are correct?

A

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Match the following (a) a non-metal that exists in two forms (i) Chlorine (b) a non-metal which is liquid at room temperature (ii) Zinc (c) a metal which is constituent of brass and bronze (iii) Carbon (d) a non-metal used for disinfecting water (iv) Bromine (e) a metal used in electroplating (v) Copper

A

(a) - (iii), (b) - (i), (c) - (ii), (d) - (iv), (e) - (v)

B

(a) - (iv), (b) - (iii), (c) - (v), (d) - (i), (e) - (ii)

C

(a) - (i), (b) - (iv, (c) - (ii), (d) - (iii), (e) - (v)

D

(a) - (iii), (b) - (iv), (c) - (v), (d) - (i), (e) - (ii)

Bottled water is drinking water (e.g., well water, distilled water, mineral water, or spring water) packaged in PET Bottle or Glass Water Bottles. Bottled water is comprehensively regulated by the U.S. Food and Drug Administration (FDA) as a packaged food product. By law, the FDA regulations for bottled water must be at least as stringent as the Environmental Protection Agency standards for tap water. What inference can be drawn from the above passage?

A

Bottled water is more expensive than tap water.

B

Bottled water is more nutritious than tap water.

C

Tap water is monitored by the FDA.

D

Bottled water can pose an environmental risk.

A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the

A

Atomic weight of the metal is 4

B

Equivalent weight of the metal is 4

C

Atomic weight of the metal is 2

D

Equivalent weight of the metal is 8

The oxygen activity in a liquid metal can be-measured by a concentration cell using stabilised zirconia electrolyte PO₂⁽¹⁾ | ZrO₂ based solid electrolyte | PO₂⁽²⁾
Where, PO₂⁽¹⁾ is the reference oxygen pressure and PO₂⁽²⁾ is the oxygen pressure in equilibrium with liquid metal. If, F is Faraday constant, the EMF of the cell is equal to

A

$$ - \frac{{RT}}{{2F}}.\frac{{PO_2^{\left( 2 \right)}}}{{PO_2^{\left( 1 \right)}}}$$

B

$$ - \frac{{RT}}{{4F}}.\frac{{PO_2^{\left( 2 \right)}}}{{PO_2^{\left( 1 \right)}}}$$

C

$$ - \frac{{RT}}{{2F}}In\frac{{PO_2^{\left( 2 \right)}}}{{PO_2^{\left( 1 \right)}}}$$

D

$$ - \frac{{RT}}{{4F}}In\frac{{PO_2^{\left( 2 \right)}}}{{PO_2^{\left( 1 \right)}}}$$

There are two solutions of acid and water, one contains acid and water in the ratio 3 ∶ 5 and the other contains acid and water in the ratio 1 ∶ 3. Equal quantities of these two solutions are mixed in a vessel. From this resulting solution, 704 ml is taken out and mixed with 88 ml of water in another vessel. What is the ratio of acid and water in the final vessel?

A

4 : 11

B

6 : 11

C

5 : 13

D

7 : 13

Iron oxide reacts with which metal to give aluminium oxide?

A

Iron

B

Aluminium

C

Copper

D

Zinc

Calculate the amount of water to be mixed (ml) with the electrolyte from the give data. Amount of metal oxide used=12 g Amount of electrolyte: 6 ml

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