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(1) Mycobacteriumleprae, the causative agent of
leprosy, was discovered by G. H. Armauer Hansen
in Norway in 1873. Hansen observed a number of
nonrefractile small rods in unstained tissue sections.
The rods were not soluble in potassium lye, and they
were acid- and alcohol-fast. In 1879, he was able to
stain these organisms with Ziehl’s method and the
similarities with Koch’s bacillus (Mycobacterium
tuberculosis) were noted

(3) The kilobit is a multiple of the unit bit for digital
information or computer storage. The prefix kilo (symbol k) is defined in the International System of Units
(SI) as a multiplier of 103
(1 thousand), and therefore,
1 kilobit = 103 bits = 1000bits. However, computers
are binary or base 2, as in ones and zeros. So instead
of counting by tens, they count by 2s. So instead of
1,10,100,1000 it is 1,2,4,8,16,32,64,128,256, 512,
1024

(3) Primary storage, also known as main storage or
memory, is the area in a computer in which data is
stored for quick access by the computer’s processor.
The terms random access memory (RAM) and memory
are often as synonyms for primary or main storage.

(4) The kilobyte is a multiple of the unit byte for digital information. It refers to either 1024 (210) bytes or
1000 (103
) bytes, dependent upon context, in the fields
of computer science and information technology

. (3) Charles Babbage was considered to be the father
of computing after his invention and concept of the
Analytical Engine in 1837. Babbage is credited with
inventing the first mechanical computer that eventually led to more complex designs. He was an English
polymath.

(4) The most common image file formats, the most
important for cameras, printing, scanning, and internet use, are JPG, TIF, PNG, and GIF. In computing,
.mdb file-extension is used in certain versions of Microsoft Access databases

. (1) Gunpowder was the first chemical explosive and
the only one known until the invention of nitrocellulose,
nitroglycerin, smokeless powder, and TNT in the
second half of the 19th century. Prior to the invention
of gunpowder, many incendiary and burning devices
had been used, including Greek fire. Roger Bacon
invented gunpowder

Solution:

Answer :Option C

The change between 1^st and 2^nd figure is same as changes between 3^rd and 4^th figure, pattern of change is as:

Now changes between 2^nd to 3^rd is same as changes between 4^th to 5^th , it can be explain as:

These two changes occurs alternatively hence changes between 5^th and answer figure will be same as changes between 1^st and 2^nd figure.

Hence

Solution:

Answer :Option C

(2) Secondary storage, sometimes called auxiliary
storage, is all data storage that is not currently in a
computer's primary storage or memory. In a personal computer, secondary storage typically consists of
storage on the hard disk and on any removable media, if present, such as a CD or DVD, flash memory,
floppy disks, magnetic tape, paper tape, punched
cards, standalone RAM disks, and Iomega Zip drives

Solution:

Answer :Option D

. (4) In IBM PC compatible computers, the Basic Input/Output System (BIOS), is the de facto standard
defining a firmware interface. The name originated
from the Basic Input/Output System used in the CP/
M operating system in 1975

(1) Otto Hahn, (8 March 1879 – 28 July 1968) was a
German chemist and Nobel laureate, a pioneer in the
fields of radioactivity and radiochemistry. He is
regarded as “the father of nuclear chemistry”. Hahn
was a courageous opposer of Jewish persecution by
the Nazi Party and after World War II he became a
passionate campaigner against the use of nuclear
energy as a weapon. He served as the last President
of the Kaiser Wilhelm Society (KWG) in 1946 and as
the founding President of the Max Planck Society
(MPG) from 1948 to 1960. He is famous for invention
of atomic bomb.

(3) The electron is a subatomic particle with a negative
elementary electric charge. An electron has a mass
that is approximately 1/1836 that of the proton. The
intrinsic angular momentum (spin) of the electron is
a half-integer value in units of h, which means that it
is a fermion. Like all matter, they have quantum
mechanical properties of both particles and waves,
so they can collide with other particles and can be
diffracted like light. The electron was identified as a
particle in 1897 by J. J. Thomson and his team of
British physicists.

. (2) A personal computer (PC) is a digital computer
designed for use by only one person at a time. A
typical personal computer assemblage consists of a
central processing unit (CPU) two types of computer
memory and various input/output devices, including
a display screen, keyboard and mouse, modem, and
printer.

(3) In electronics, a vacuum tube, thermionic valve,
tube, or valve is a device controlling electric current
through a vacuum in a sealed container. The container
is often thin transparent glass in a roughly cylindrical
shape. Sir John Ambrose Fleming (29 November 1849
DISCOVERIES & INVENTIONS
SGAE–1061
– 18 April 1945) was an English electrical engineer
and physicist. He is known for inventing the first
thermionic valve or vacuum tube, the diode, then
called the kenotron in 1904. He is also famous for
the left hand rule (for electric motors).