SSC QUIZ ON BOAT AND STREAMS

 

Dear reader here we are providing some question on boat and streams which can be help full in your upcoming Exam:

1.   A boat can run 13 km/hr in still water and the speed of current 4 km/hr. in how many hours the boat will covered 68 km down streams?

(1) 2 hours                               (2) 3 hours

(3)  4 hours                              (4) 5 hours

2.   A man rows downstream 32 km and 14 km upstream. If he takes 6 hours to cover each distance, then the Velocity (in km/h) of current is:

(1) 1/2                                      (2) 3/2

(3) 2                                         (4) 5/2

3.   A man can row at 5 km/h in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place?

(1) 1.5 km                               (2) 2.4 km

(3) 3.5   km                             (4) 1 km

4.   A man can row 40 km upstream and 55 km downstream in 13 hours. Also, he can row 30 km upstream and 44 km downstream in 10 hours. Find the speed of the man in still water and the speed of the current.

(1) 5                                          (2) 3

(3) 6                                          (4) 4

5.   In a stream running at 2 km/h, a motorboat goes 6 km upstream and back again to the starting point in 33 minutes. Find the speed of the motorboat in still water.

(1) 22 km/hr                            (2) 20 km/hr

(3) 25 km/hr                            (4) 18 km/hr

6.   A man takes 3 hours 45 minutes to row a boat I5 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream. Find the speed of the river current in km/hr.

(1) 1 km/hr                              (2) 2 km/hr

(3) 3 km/hr                              (4) 4 km/hr

7.   A person can row a boat d km upstream and the same distance downstream in 5 hours 15 minutes. Also, he can row the boat 2d km upstream in 7 hours. How long will it take to row the same distance 2d km downstream?

(1) 3/2 hours                            (2) 7 hours

(3) 7 (¼)                                  (4) 7/2 hours

8.   A man swimming in a stream which flows 1.5 km/h, finds that in a given time he can swim twice as fast with the stream as he can against it. At what rate does he swim?

(1) 4 km/hr                              (2) 4.5 km/hr

(3) 6 km/hr                              (4) 7 km/hr

9.   A motorboat in still water travels at a sped of 36 km/h. It goes 56 km upstream in 1 hour 45 minutes. The time taken by it to cover the same distance down the stream will be:

(1) 2 hours 25 minutes            (2) 3 hours

(3) 1 hour 24 minutes              (4) 2 hours 21 minutes

10.  A man can row 6 km/h in still water. If the speed of the current is 2 km/h, it takes 3 hours more in upstream  than in the downstream for the same distance.

(1) 30 km                                (2) 24 km

(3) 20 km                                (4) 32 km

 ANSWER WITH EXPLANATION: 

1.   (3)

The speed downstream = 13+4 = 17 km/hr

∴Time taken to covered 68 km = 68/17 = 4 hours

2.   (2)

Rate downstream = 32/6 km/h; Rate upstream = 14/6 km/h

 Velocity of current = 1/2 (32/6 - 14/6) km/h

= 3/2 km/h

3.   (2)

-Speed downstream = (5 + 1) km/h = 6 km/h.

Speed upstream = (5 – 1) km/h = 4 km/h.

Let the required distance be x km.

Then, x/6 + x/4 = 1

2x + 3x = 12

5x = 12

x = 2.4 km.

4.    (2)

Let rate upstream = x km / hr and rate downstream = y km / hr.

Then,  40/x+ 55/y   =13   ...(i)

and   30/x+44/y=10       ...(ii)

Multiplying (ii) by 4 and (i) by 3 and subtracting, we get : 

11/y=1                   or                     y=11.

Substituting y = 11 in (j), we get : x = 5.
\threrefore Rate in still water =1/2(11+5) km/h=8km/h.

Rateofcurrent = 1/2(11−5) km/h=3km/h.

5. (1)

 Let the speed of the motorboat in still water be x km/h. Then,
Speed downstream = (x + 2) km/h; Speed upstream = (x - 2) km/h.
 6/x+2+6/x−2    =    33/60

<=>  11x2−242x+2x−44=0

«=>   (x - 22) (11x + 2) = 0  <=>   x = 22. Hence, speed of motorboat in still water = 22 km/h.

6.    (1)
Rate downstream=15334 km/hr

=15×415km/hr=4km/hr.

Rate upstream=(5212) km/hr

=(5×25)=2km/hr

Speed of current=12(4−2)km/hr=1km/hr.

7.    (4)

 Let the speeds of boat and stream be x and y km/hr respectively.

Then, Rate downstream = (x + y) km/hr and Rate upstream = (x - y) km/hr

Given d / (x+y) + d / ( x-y ) =5 hrs 15 minutes = 21/4 hours

and 2d / (x+y) = 7 => d / (x+y)=7/4 => 2d / (x+y)=7/2

Hence, he takes 7/2 hours to row 2d km distance downstream.

8.     (2)

 Rate of stream =1.5 km/hr

Let speed of man in still water = x km/hr and Distance = d

Upstream speed = (x - 1.5) km/hr Downstream speed = (x + 1.5) km/hr

Given, 2d / (x+1.5) = d/ (x-1.5) => 2x - 3 = x + 1.5 => x = 4.5 km/hr

9.   (3)

 Speed of the motorboat upstream

= 56km/1 ¾ hours

=32 km/h

Let the speed of the current = x km/h

36 – x    = 32

à 36 – 32  = 4 km/h

speed of motorboat downstream = 36 + 4 = 40 km/h

Time taken to cover 56 km at 40 km/h =     56/40 = 7/5 hours

= 1 hour 24 minutes

10.  (2)

Let he required distance be x km.

x/6-2 + x/ 6 + 2 = 3

à x/4 – x/8 = 3

à 2x –x/8 = 3

= x=3 x 8 = 24 km.

05:02 - By Unknown 0

Most Important English Vocabulary

We have selected these words for maximum usefulness. All these have appeared in recent years in different exams. it can be helpful in upcoming exams. 

Ambiguity         - अस्पष्टता	Deface                 - बदनाम करना
Aggravate        - उत्तेजित करना	Exhibit                  - प्रदर्श
Apparently  - प्रत्यक्षस्पष्ट रूप	Enormous              - भारी
Auspicious        - शुभ	Enthusiastic           - उत्साही
Autumn             -शरद	Effeminate            - स्त्रीवत
Appendix           - परिशिष्ट	Enmity                   - शत्रुता
Aggregate         - पूर्णयोग	Essential                - आवश्यक
Abominable       -घिनौना	Endeavour              - प्रयास करना
Accomplish      - पूरा	Etiquette                 - शिष्टाचार
Admonish         -चेतावनी देना	Elaborated              - सविस्तार
Amusement     -मनोरंजन	Futile                      - व्यर्थ
Antagonism      - विरोध	Fragile                     - नाजुक
Ancestor          - पूर्वज	Ferocious                - क्रूर
Adjourn             - स्थगित करना	Forfeit                      - अर्थदंड
Adroit                - निपुण	Furious                     - अति क्रुद्ध
Amiable            - सब का प्यारा	Fatal                        - घातक
Affliction           - कष्ट	Generosity               - उदारता
Bias                   - पूर्वाग्रह	Grievous                - कष्टदायक
Benevolent     - उदार	Gaudy                     - भड़कीला
Blandish          - चापलूसी	Gnaw                      - कुतरना
Bewilder           - घबरा देना	Grandeur                - वैभव
Barricade         - बाधा	Humorous                - विनोदपूर्ण
Chaos                 - अव्यवस्था	Haphazard                - अव्यवस्थित
Catastrophe     - तबाही	Hymn                       - स्तोत्र
Courteous       - विनम्र	Insincere                  - निष्ठाहीन
Conceit            - कष्टकल्पना	Illuminate                 -उजागर करना
Condemn        - निंदा करना	Impulsive                - आवेगी
Curiosity           - जिज्ञासा	Jumpy                     - चिड़चिड़ा
Consequence  -  परिणाम	Jocund                     - प्रफुल्ल
Charitable         - उदार	Jester                       - विदूषक
Condensed      - गाढ़ा	Juvenile                   - किशोर
Courtier            - राजदरबारी	Kindred                    - परिजन
Calamity           - आपदा	Kinsman                  - स्वजन
Clamor              - कोलाहल	Knavish                   - धूती
Capacious        - विशाल	Lenient                      - उदार
Demise             - निधन	Melancholy               - उदासी
Dauntless        - निडर	Nymph                      - अप्सरा

05:02 - By Unknown 0

SSC: World Geography Quiz

1. The Homolographic projection has the correct representation of
A. shape
B. area
C. baring
D. distance


2. The latitudinal differences in pressure delineate a number of major pressure zones, which correspond with
A. zones of climate
B. zones of oceans
C. zones of land
D. zones of cyclonic depressions

3. The higher the wind speed and the longer the fetch or distance of open water across which the wind blows and waves travel, the ____ waves and the ____ energy they process.
A. larger, more
B. larger, less
C. smaller, more
D. smaller, less

4. The hazards of radiation belts include
A. deterioration of electronic circuits
B. damage of solar cells of spacecraft
C. adverse effect on living organisms
D. All of the above

5. The great Victoria Desert is located in
A. Canada
B. West Africa
C. Australia
D. North America

6. The intersecting lines drawn on maps and globes are
A. latitudes
B. longitudes
C. geographic grids
D. None of the above

7. The light of distant stars is affected by
A. the earth's atmosphere
B. interstellar dust
C. both (a) and (b)
D. None of the above

8. The landmass of which of the following continents is the least?
A. Africa
B. Asia
C. Australia
D. Europe

9. Without ____ the equator would be much hotter than it is while the poles would be much cooler.
A. latitudinal redistribution of heat
B. cycle of air circulation
C. global wind pattern
D. All are similar terms

10. The habitats valuable for commercially harvested species are called
A. coral reefs
B. sea grass bed
C. hot spots
D. None of the above

11. Which of the following is tropical grassland?
A. Taiga
B. Savannah
C. Pampas
D. Prairies

12. With the disintegration of USSR in end 1991, comprised of ____ Union Republics.
A. 15
B. 10
C. 5
D. 25

13. The iron and steel industries of which of the following countries are almost fully dependent on imported raw materials?
A. Britain
B. Japan
C. Poland
D. Germany

14. The temperature increases rapidly after
A. ionosphere
B. exosphere
C. stratosphere
D. troposphere

15. The humidity of the air depends upon
A. temperature
B. location
C. weather
D. All of the above



ANSWERS:
1. B
2. A
3. A
4. D
5. C
6. C
7. C
8. C
9. D
10. B
11. B
12. A
13. B
14. A
15. D

05:01 - By Unknown 0

Professional Knowledge Quiz

1. How long is an IPv6 address?

A. 32 bits
B. 128 bytes
C. 64 bits
D. 128 bits


2. What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?
A. NAT
B. Static
C. Dynamic
D. PAT

3. What are the two main types of access control lists (ACLs)?
I.  Standard
II. IEEE
III.Extended
IV. Specialized
A. I and III
B. II and IV
C. III and IV
D. I and II

4. What command is used to create a backup configuration?
A. copy running backup
B. copy running-config startup-config
C. config mem
D. wr mem

5. You have 10 users plugged into a hub running 10Mbps half-duplex. There is a server connected to the switch running 10Mbps half-duplex as well. How much bandwidth does each host have to the server?
A. 100 kbps
B. 1 Mbps
C. 2 Mbps
D. 10 Mbps

6. Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?
A. A
B. B
C. G
D. N

7. Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?
A. 192.168.168.129-190
B. 192.168.168.129-191
C. 92.168.168.128-190
D. 192.168.168.128-192

8. To back up an IOS, what command will you use?
A. backup IOS disk
B. copy ios tftp
C. copy tftp flash
D. copy flash tftp

9. What protocol does PPP use to identify the Network layer protocol?
A. NCP
B. ISDN
C. HDLC
D. LCP

10. Which of the following commands will allow you to set your Telnet password on a Cisco router?
A line telnet 0 4
B. line aux 0 4
C. line vty 0 4
D. line con 0

11. Which protocol does DHCP use at the Transport layer?
A. IP
B. TCP
C. UDP
D. ARP

12. Which command is used to determine if an IP access list is enabled on a particular interface?
A. show access-lists
B. show interface
C. show ip interface
D. show interface access-lists

13. Where is a hub specified in the OSI model?
A. Session layer
B. Physical layer
C. Data Link layer
D. Application layer

14. What does the passive command provide to dynamic routing protocols?
A. Stops an interface from sending or receiving periodic dynamic updates.
B. Stops an interface from sending periodic dynamic updates but not from receiving updates.
C. Stops the router from receiving any dynamic updates.
D. Stops the router from sending any dynamic updates.

15. Which protocol is used to send a destination network unknown message back to originating hosts?
A. TCP
B. ARP
C. ICMP
D. BootP

ANSWERS:

1. D

2. D

3. A

4. B

5. D

6. C

7. A

8. D

9. A

10. C

11. C

12. C

13. B

14. B

15. C

05:00 - By Unknown 0

GK Quiz on Current Affairs

1.    Which among the following day is observed on 6^th March 2014?

(1) World International Women’s day

(2) World Children day

(3) World Cancer Day

(4) World Dentist day

(5) World Heart day

2.    Recently Sheila Dikshit has appointed as the 22^nd Governor of which state?

(1) Karnataka

(2) Rajasthan

(3) Kerala

(4) Himachal Pradesh

(5) None of these

3.    Recently Union Ministry of Minority Affairs launched which scheme for the welfare of minorities people?

(1) Indira Swasthya Yojna

(2) Rajiv Swasthya Yojna

(3) Atal Sehat Yojna

(4) Maulana Azad Sehat Yojna

(5) None of these

4.    According to the RBI reports on Development’s in India’s Balance of Payments Current Account Deficit declined to what percent of Gross Domestic Product (GDP) in Quarter 3 (Oct-Dec) 2013-14?

(1) 0.4%                (2) 0.5%

(3) 0.7%                (4) 0.9%

(5) 0.6

5.    Who is the author of the book – “India at Risk – Mistakes, Misconceptions and Misadventures of Security policy” which was launched on 3^rd March 2014?

(1) Arvind Adiga

(2) Rohinton Nariman

(3) Salman Khurshid

(4) L.K. Advani

(5) Jaswant Singh

6.    Which among the following country emerged as  the winner of the ICC Under-19 Cricket World Cup 2014 at Dubai?

(1) South Africa                            (2) Pakistan

(3) New Zealand                           (4) India

(5) Australia

7.    The duration of President’s rule in a state in the first case is ___?

(1) 12 months

(2) 6 months

(3) 3 months

(4) 9 months

(5) None of these

8.    Which among the following India’s first private bank to commence operation in China is___?

(1) HDFC Bank

(2) Axis Bank

(3) ICICI Bank

(4) Yes Bank

(5) None of these

9.    The G-20 countries members represents about ____ per cent of the world’s economy. Fill the blank with correct option.

(1) 50                                 (2) 60

(3) 75                                 (4) 80

(5) 85

10.  Union Govt. on 28 February 2014 cleared a proposal of the Election Commission (EC) to raise expenditure limits for elections in the country. What is the new upper limit of expenditure for fighting election for a Parliamentary seat in the country? 

(1) 40 Lakh                                    (2) 50 lakh

(3) 60 lakh                                     (4) 70 lakh

(5) None of these

Answers:

1	4	6	1
2	3	7	2
3	4	8	2
4	4	9	5
5	5	10	4

05:00 - By Unknown 0

CAD declined to 0.9 percent of GDP in Quarter 3 of 2013-14

Current Account Deficit (CAD) declined to 0.9 percent of Gross Domestic Product (GDP) in Quarter 3 (October - December) of 2013-14. This was revealed by the Report on Developments in India’s Balance of Payments released by Reserve Bank of India (RBI) on 5 March 2014. Also, as per the report CAD reached to its lowest in the past eight years.

Other highlights of the Report:

•    Rising exports and moderation in gold imports have pulled down India's current account deficit (CAD) sharply to 4.2 billion dollar in Quarter 3 of 2013-14.

•    The export was increased due to the significant growth especially in the exports of engineering goods, readymade garments, iron ore, marine products and chemicals.

•    On the other hand, merchandise imports recorded a decline of 14.8 per cent at 112.9 billion dollar in Q3 of 2013-14.

•    Decline in imports was primarily led by a steep decline in gold imports. This was amounted to 3.1 billion dollar as compared to 17.8 billion dollar in Q3 of 2012-13.

•    The declined in CAD was happened due to government imposed curbs on gold imports and the Reserve Bank of India's subsidy for Non-Resident Indian's US dollar deposits.

•    CAD narrowed to 31.1 billion dollar or 2.3 per cent of GDP in April-December 2013 from 69.8 billion dollar or 5.2 percent of GDP in April-December of 2012.

•    The CAD reflects the difference between inflow and outflow of foreign currency. It stood at 31.9 billion dollar or 6.5 per cent of GDP in October-December quarter of 2012-13.

•    On a Balance of Payment (BoP) basis, merchandise exports increased by 7.5 per cent at 79.8 billion dollar) in Q3 of 2013-14. The quantum of export was 3.9 per cent in Q3 of 2012-13.

About Current Account Deficit (CAD):
A measurement of a country’s trade in which the value of goods and services it imports exceeds the value of goods and services it exports.

The current account also includes net income, such as interest and dividends, as well as transfers, such as foreign aid, though these components tend to make up a smaller percentage of the current account than exports and imports.

The current account is a calculation of a country’s foreign transactions, and along with the capital account is a component of a country’s balance of payment.

04:59 - By Unknown 0