Correct Answer: D. Participating preference shares

Correct Answer: A. prevent algal growth in culture solution

Correct Answer: A. Pancreas

Explanation

Lipase and trypsin are enzymes secreted by the pancreas into the duodenum of the small intestine. These enzymes aid in the digestion of food. Salivary glands produce amylase in order to begin digestion in the mouth and the stomach aids in digestion primarily via stomach acid (HCl).

Correct Answer: D. made more cash payments than it received during the period

Correct Answer: D. 12

Explanation

(a) In his defence before the Jewish council, Stephen went on to say that they also resisted the Holy Spirit because their fathers persecuted the prophets and they too were doing same. Their fathers persecuted those who foretold the coming of the righteous one whom they had murdered. They had received the law of God which they had not kept. This accusation angered them, so they ground their teeth against Stephen. But soon, Stephen gazed into heaven and announced that he saw Jesus sitting at the right, hand of God. Because of this, they could no longer bear it; they rushed upon him and dragged him out of the city. As they were stoning him, he prayed to God for their forgiveness, for they did not know what they were doing. While this was going on, Saul, who later became Paul, bore witness. He kept their clothes and gave his approval to it all.

(b) Stephen's trial was of significance to the early church in the following ways:

(i) It led to the evangelisation outside Jerusalem.

(ii) Stephen's death led to great persecution in Jerusalem.

(iii) The stoning of Stephen helped to introduce Saul who later became Paul the apostle to the Gentiles.

(iv) Saul led the persecution of the church.

Correct Answer: D. Obey him

Correct Answer: B. liquidity ratio

Explanation

(a)

(i) In the diagram,

\(x° + 90° = (3x + 15)°\) (Sum of opposite interior angles)

Thus, \(90° - 15° = 3x - x \implies 75° = 2x\)

\(x = 37.5°\)

(ii)

< RSQ = 90° - 37.5° = 52.5°

(b) \(2N4_{seven} = 15N_{nine}\)

\(2N4_{seven} = (2 \times 7^{2}) + (N \times 7^{1}) + (4 \times 7^{0})\)

= \(98 + 7N + 4\)

= \(102 + 7N\)

\(15N_{nine} = (1 \times 9^{2}) + (5 \times 9^{1}) + (N \times 9^{0})\)

= \(81 + 45 + N\)

= \(126 + N\)

\(\implies 102 + 7N = 126 + N\)

\(7N - N = 126 - 102 = 24\)

\(6N = 24 \implies N = 4\)

Therefore, \(244_{seven} = 154_{nine}\).

Explanation

(a)(i) Homologous series is a series are family of organic compounds with a general molecular formula, similarity in property and differing from successive member by CH\(_2\) of 14 a.m.u.

(ii) Alkanes, alkenes, cycloalkar les and aromatics.

(iii) Alkane — methane; ethane, etc.

Alkene — ethene, propene, butene, etc

Cycloalkanes — cyclohexane,

cyclopropane Aromatic — benzene.

(iv) Gas Petroleum ether Gasoline (petrol) Gas oil/diesel oil Lubricating oil Biturhen Kerosine.

(v) Because of a steady change (increase or decrease) in molecular mass of tho constituents.

(b)(i)

I. C\(_2\)H\(_5\)OH\(_{(l)}\) + H\(_2\)SO\(_4\)\(_{(l)}\) \(\to\) C\(_2\)H\(_5\)HSO\(_4\)\(_{(l)}\) + H\(_2\)O\(_{(l)}\)

II. C\(_2\)H\(_5\)HSO\(_4\)\(_{(l)}\) \(\to\) C\(_2\)H\(_4\)\(_{(g)}\) + H\(_2\)SO\(_4\)\(_{(l)}\)

(ii) I. C\(_2\)H\(_5\)OH\(_{(l)}\) + H\(_2\)SO\(_4\)\(_{(l)}\) ---> C\(_2\)H\(_5\)HSO\(_4\)\(_{(l)}\) + H\(_2\)O\(_{(l)}\)

II. C\(_2\)H\(_5\)HSO\(_4\)\(_{(l)}\) \(\to\) C\(_2\)H\(_5\)OC\(_2\)H\(_5\)\(_{(l)}\) + H\(_2\)SO\(_4\)

(c)(i)

(I) C H O

52.0 13.3 34.7

12 1 16

4.33 13.3 2.17

2.17 2.17 2.17

1 6 1

Emperica formula = C\(_2\)H\(_6\)O

(II) (C\(_2\)H\(_6\)O)\(_n\) = 46

(12 x 2 + 6 x 1 + 16)\(_n\) = 46

46\(_n\) = 46

n = \(\frac{46}{46}\) = 1

molecular formula = C\(_2\)H\(_6\)O

(ii)