(a) Two disadvantages of Rail Transport: 

1. Door-to-door service is not possible. Its services are available only between certain definite points. 

2. Railway transport is not suitable for carrying perishable and fragile goods due to frequent and careless handling of goods. 

(b) Two characteristics of an Ideal Warehouse: 

1. It must be centrally located so that loading, unloading and transportation of goods takes minimum time and cost. 

2. Goods should be protected from heat, cold, water, insects, corrosion, fire and theft of goods. 

(c) Provident Fund Scheme: Under this schemes the employee and the employer contribute every month ten per cent of the basic wages. The total contributions are invested in specified investments. The accumulated amount of standing credit to an employee is payable on retirement, death or at the time of leaving service. An employee can get advances and permanent withdrawals for construction of house, marriage of dependents and other specified purposes, like serious illness. 

(d) Revenue Expenditure: This expenditure relates to normal functioning of the government departments and provision of various government services. The main examples of such expenditures are salaries, pensions, interest, subsidies, grants to the state governments etc., are known as Revenue Expenditure. These expenditures are incurred to maintain the general services of the government like defence, law and order, administration and to provide-various social services (education, health, etc.) and economic services (agriculture, industry, power, transport and communications etc.) 

(e) Status Barriers: Superior-subordinate relationship in the formal organisation structure may obstruct free flow of information. A manager may convey only selected information to his subordinates so as to maintain status difference. He may feel that if he communicates problems or results which reflect his ability and judgment his position as a superior would be undermined. Similarly, subordinates tend to convey only those things which the superiors would appreciate. Thus, status creates filtering and distorts downward and upward communications.