Correct Answer: A. N50

Correct Answer: A)

2HNO\(_2\) + 2HI \(\rightarrow\) 2H\(_2\)O + 2NO + I\(_2\)

Explanation

A redox reaction is a chemical reaction in which the oxidation states of the atoms involved change. This means that one or more elements lose electrons (oxidation) and one or more elements gain electrons (reduction).

In Option A: 2HNO\(_2\) + 2HI \(\rightarrow\) 2H\(_2\)O + 2NO + I\(_2\), the oxidation state of nitrogen in HNO\(_2\) decreases from +3 to +2 (reduction), and the oxidation state of iodine in HI increases from -1 to 0 (oxidation). Since there's both oxidation and reduction happening in this reaction, it is a redox reaction and the correct answer.

In Option B: Zn + H\(_2\)SO\(_4\) \(\rightarrow\) ZnSO\(_4\) + H\(_2\), the oxidation state of zinc increases from 0 to +2 (oxidation), and the oxidation state of hydrogen in H\(_2\)SO\(_4\) decreases from +1 to 0 (reduction). This is also a redox reaction, but it's not the correct answer according to the provided options.

In Option C: BaCl\(_2\) + 2AgNO\(_3\) \(\rightarrow\) AgCl\(_2\) + Ba(NO\(_3\)\(_2\), there is no change in the oxidation states of any elements. Thus, it is not a redox reaction.

In Option D: 4FeO + O\(_2\) \(\rightarrow\) 2Fe\(_2\)O\(_3\), the oxidation state of iron increases from +2 to +3 (oxidation), and the oxidation state of oxygen remains the same. This reaction is also a redox reaction, but it's not the correct answer according to the provided options.

Given the options, Option A is the correct answer, despite the fact that Options B and D are also redox reactions. There might be an error in the question or the options provided, so it's recommended to consult the relevant sections in the recommended textbooks for further clarification.

Explanation

(a) Map of Nigeria showing (i) Ibadan, (ii) Owerri (iii) Bernin Kebbi (iv) Fadama plain of Sokoto and Cross river.

(b) Factors that encourage tourism in Nigeria:

(i) Favourable climate (ii) Beautiful sceneries' e.g sandy beaches, caves, etc

(iii) Relative political stability (iv) Interesting culture/festivals (v) Wildlife (vi) Nature reserves

(vii) Historical monuments/sites

(viii) Hospitality of the people (ix) Publicity

(x) Relative security (.xi) Hotels of international

standard (xii)Availability of capital

(xiii) Outstanding Inan-made features. e.g Kainji dam. National theatre. National parks, etc.

(xiv) Availability good transport network

(xv) Availability of communication network

(xvi)Appreciation of leisure

(xvii) Favourable government policy

(xviii) Need to earn foreign exchange.

(c) Problems hindering tourism in Nigeria

(i) Inadequate accommodation

(ii) Inadequate capital/funding

(iii) Heavy tax on tourism entrepreneurs

(iv) Low patronage (v) Poor sanitation

(vi) Poor transportation network (vii) Competition from sister countries (viii) Insecurity/political problems

(ix) Inadequate publicity/awareness (x) Limited holiday centres (xi) Inability to explore and develop new tourist attractions/destinations

(xii) Poor quality services

(xiii) Easy spread of.diseases (xiv) Low income level

(xv) Limited local entrepreneurship (xvi) Poor management (xvii) Inconsistent government policies

(xviii) Poor infrastructure/social amenities (xix) Negative reportage (xx) Inefficient communication network

(xxi) High cost of services/inflation (xxii) Deforestation (xxiii) Bush burning

Correct Answer: D. 29.8cm

Correct Answer: D. master

Correct Answer: A. C2H2

Explanation

(a) What is Transportation? Transportation is the movement of people, goods and services from one place to the other

(b) Highlight four advantages of air transportation.

(i) It is very fast,

(ii) It is very comfortable

(ii) It uses direct routes

(iv) It can reach inaccessible areas with landing facilities

(v) It is used for dispatch of mails, machines and spare parts

(vi) !t is used for carrying relief materials

(vii) It can carry valuable and perishable cargo

(viii) Can carry urgently required medicare supplies in times of emergency.

(ix) No cost is incurred in establishing air routes

(x) There is no obstructions like mountains, seas, oceans, lakes and forest.

(c) Describe five contributions of transportation to economic development

(a) Used for movement of people

(b) For movement of goods and services

(c) Provision of employment opportunities

(d) Promotion of tourism

(e) Foreign exchange earning

(f) Generation of revenue to the government

(g) Enhancement of national integration

(h) Fostering of international relationship

(i) Opening up of new areas for development

(j)Access to natural resources

(k) Promotion of national and international trade

(I) Diffusion of ideas, innovations and technology.

Correct Answer: A) Crossed cheque

Explanation

Option A: Crossed cheque (Correct)

A crossed cheque is a cheque that has two parallel lines drawn across the face of the cheque. This indicates that the cheque can only be deposited into a bank account and cannot be cashed across the counter. So, option A is the correct answer.

Option B: Order cheque

An order cheque is a cheque that is payable to a specific person or entity. It can be cashed across the counter by the person whose name is written on the cheque or deposited into their bank account.

Option C: Certified cheque

A certified cheque is a cheque that has been verified and guaranteed by the bank. It can be cashed across the counter or deposited into a bank account.

Option D: Bearer cheque

A bearer cheque is a cheque that is payable to the bearer, which means anyone who possesses the cheque can cash it across the counter.

Based on the explanations above, we can see that the correct answer is option A, a crossed cheque, as it cannot be cashed across the counter.

Correct Answer: B) rate of forward reaction will increase

Correct Answer: A. student