General Science - Online Test
Q1. Threshold frequency of a photon required to eject a photoelectron from the surface of cesium is
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. The alkali metals are low melting. Which of the following alkali metal is expected? to melt if the room temperature rises to
Answer : Option C
Explaination / Solution:
Cs has very low melting point ()
Q3. need for modulation also arises from
Answer : Option C
Explaination / Solution:
No Explaination.
Q4.
For testing halogens in an organic compound with solution, sodium extract (Lassaigne’s test) is acidified with dilute What will happen if a student acidifies the extract with dilute in place of dilute HNO3?
Answer : Option D
Explaination / Solution:
white precipitate of is formed.
Q5. The equation of saving function is
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. During major part of British period
Answer : Option A
Explaination / Solution:
During major part of British period exports was more than imports. The resulted in favourable balance of trade.
Q7. Activation energy of a reaction is
Answer : Option C
Explaination / Solution:
Activation energy is minimum energy required for reactant to get converted to product.
Q8. _____ refers to the method or process of presenting data in the form of rows and columns and ____ refers to the actual presentation of data on the form of rows and columns
Answer : Option C
Explaination / Solution:
In a tabular presentation, data are presented in rows (read horizontally) and columns (read vertically). The most simple way of conceptualising a table is to present the data in rows and columns alongwith some explanatory notes. Tabulation can be done using one-way, two-way or three-way classification depending upon the number of characteristics involved
Q9. Which one is the defect in the agricultural marketing system
Answer : Option C
Explaination / Solution:
There is no proper storage or warehousing facilities for farmers in the villages where they can store their agriculture produce. Every year 15 to 30 per cent of the agricultural produce are damaged either by rats or rains due to the absence of proper storage facilities. Thus, the farmers are forced to sell their surplus produce just after harvests at a very low and un-remunerative price.
Q10. Passengers on a carnival ride move at constant speed in a horizontal circle of radius 5.0 m, making a complete circle in 4.0 s. What is their acceleration?
Answer : Option B
Explaination / Solution:
The speed is constant, so this is uniform circular motion. We are given the radius R=5.0 m and the period T=4.0 s, so we can calculate the acceleration directly using equation
== 12m/s2
