Which of the following is the main source of energy of the sun?
Which of the following is the main source of energy of the sun?
Choose the correct combination—
Choose the correct combination—
On which principle does the tape recorder function?
On which principle does the tape recorder function?
While functioning what is the temperature level inside a refrigerator?
While functioning what is the temperature level inside a refrigerator?
Robert Koch worked on—
Robert Koch worked on—
The name of the device used in measuring earthquake is-
The name of the device used in measuring earthquake is-
Starch is a mixture of—
Starch is a mixture of—
Numismatics is the study of—
Numismatics is the study of—
Which of these is not a primary color?
Which of these is not a primary color?
Wright Brothers are regarded inventors of the-
Wright Brothers are regarded inventors of the-
Which one of the following is not a noble gas?
Which one of the following is not a noble gas?
Anopheles mosquito causes which of the following deases?
Anopheles mosquito causes which of the following deases?
Which of the following is not a metal?
Which of the following is not a metal?
Which of the following is the working principle of a washing machine?
Which of the following is the working principle of a washing machine?
What do scientists beleve global warming is caused by?
What do scientists beleve global warming is caused by?
HIV AIDS can be spread through—
HIV AIDS can be spread through—
The Lunar Eclipse occurs when?
The Lunar Eclipse occurs when?
What is the acceptable safe limit of Arsenic per liter of water?
What is the acceptable safe limit of Arsenic per liter of water?
The scientist who first discovered that the earth revolves round the sun was-
The scientist who first discovered that the earth revolves round the sun was-
Eskimos hunt using a dog-driven vehicle called:
Eskimos hunt using a dog-driven vehicle called:
Which of the following is a device for storing electric charge?
Which of the following is a device for storing electric charge?
Centigrade & Farenheit scales give same reading at-
Centigrade & Farenheit scales give same reading at-
Who invented the miner's safety-lamp?
Who invented the miner's safety-lamp?
The Lunar Eclipse occurs when?
The Lunar Eclipse occurs when?
Which one is a renewable energy source?
Which one is a renewable energy source?
Which of the following is not a gas?
Which of the following is not a gas?
The tendency of a liquid drop to assume spherical shape is due to—
The tendency of a liquid drop to assume spherical shape is due to—
Which of the following statements is true?
Which of the following statements is true?
Which of the following soils is very hard to cultivate?
Which of the following soils is very hard to cultivate?
Which of the following is a renewable source of energy?
Which of the following is a renewable source of energy?
Which of the following sulphur compound is used as a bleaching agent in textile industry?
Which of the following sulphur compound is used as a bleaching agent in textile industry?
Which organization of UNO declared prohibition on Clone human chiled?
Which organization of UNO declared prohibition on Clone human chiled?
Main cause of night blindness is deficiency of Vitamin-
Main cause of night blindness is deficiency of Vitamin-
Meteorology is the science of—
Meteorology is the science of—
The unit of current is—
The unit of current is—
The household line voltage(in volt) is approximately—
The household line voltage(in volt) is approximately—
The freezing point in farenheit thermometer is:
The freezing point in farenheit thermometer is:
"To every action there is an equal and oposite reaction"-- this theory has been given by--
"To every action there is an equal and oposite reaction"-- this theory has been given by--
Which of the following is necessary for a substance to burn?
Which of the following is necessary for a substance to burn?
বস্তুর ওজন সবচেয়ে বেশি—
বস্তুর ওজন সবচেয়ে বেশি—
What is the correct increasing order of abundance of the main components of air?
What is the correct increasing order of abundance of the main components of air?
What is the name of earth's moon?
What is the name of earth's moon?
A universal doner is a person having blood group of—
A universal doner is a person having blood group of—
Which of the followings is not a part of milk?
Which of the followings is not a part of milk?
Light year is related to—
Light year is related to—
How many Dynes are there in one gram weight?
How many Dynes are there in one gram weight?
The credit of developing the polio vaccine goes to—
The credit of developing the polio vaccine goes to—
Decible is unit of-
Decible is unit of-
The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?
The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?
The velocity of light was measured by—
The velocity of light was measured by—
Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
What are elements containing the same number of protons but different number of neutrons called?
What are elements containing the same number of protons but different number of neutrons called?
Which of the following is not a part of the human eye?
Which of the following is not a part of the human eye?
The Chernobyl nuclear accident took place in—
The Chernobyl nuclear accident took place in—
In Y2K, K stands for—
In Y2K, K stands for—
Who among following invented the steam engine?
Who among following invented the steam engine?
The name of the strand of virus, known as 'swine flu' virus, that has been declares as a pandemic worldwide is:
The name of the strand of virus, known as 'swine flu' virus, that has been declares as a pandemic worldwide is:
ডুবোজাহাজে কোন যন্ত্রের সাহায্যে পানির নিচ থেকে উপরের দৃশ্য দেখা যায়?
ডুবোজাহাজে কোন যন্ত্রের সাহায্যে পানির নিচ থেকে উপরের দৃশ্য দেখা যায়?
What is the name given to the respiratory holes on the surface of a leaf?
What is the name given to the respiratory holes on the surface of a leaf?
Which one of the following gases is not a greenhouse gas?
Which one of the following gases is not a greenhouse gas?
How many legs do butterflies have?
How many legs do butterflies have?
What is the normal temperature of human body?
What is the normal temperature of human body?
The shortest day is in the month of—
The shortest day is in the month of—
Which one of the following is an air-pollutant present in the atmosphere?
Which one of the following is an air-pollutant present in the atmosphere?
Which of the following was the world's worst industrial disaster?
Which of the following was the world's worst industrial disaster?
The credit of inventing the television goes to-
The credit of inventing the television goes to-
Who was the surgeon who pioneered antiseptic surgery in 1865?
Who was the surgeon who pioneered antiseptic surgery in 1865?
Which one of the following gases is predominant in the atmosphere?
Which one of the following gases is predominant in the atmosphere?
One liter of water is equivalent to how many kilograms?
One liter of water is equivalent to how many kilograms?
Study of earthquakes is known as—
Study of earthquakes is known as—
What does Angstrom measure?
What does Angstrom measure?
SMS available in mobile phone stands for—
SMS available in mobile phone stands for—
Fish preathe through—
Fish preathe through—
Which one of the following crops requires continuous semi-aquatic condition for cultivation?
Which one of the following crops requires continuous semi-aquatic condition for cultivation?
Joule is the unit of—
Joule is the unit of—
Ecology deals with-
Ecology deals with-
The center of the earth is known as the—
The center of the earth is known as the—
What is the scientific name of Vitamin C?
What is the scientific name of Vitamin C?
Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
Marble is a changed form of which of the following?
Marble is a changed form of which of the following?
Diamond and graphite are similar in-
Diamond and graphite are similar in-
Which of these is not a planet in the Solar System?
Which of these is not a planet in the Solar System?
The telephone was invented by-
The telephone was invented by-
Who developed the small pox vaccination?
Who developed the small pox vaccination?
How many days are in a leap year?
How many days are in a leap year?
Who among the the following is associated with the invention of computers?
Who among the the following is associated with the invention of computers?
Removal of the top layer of soil/rocks by wind, water is known as-
Removal of the top layer of soil/rocks by wind, water is known as-
The first attempt in printing was made in England by—
The first attempt in printing was made in England by—
The Richter scale is used for measuring-
The Richter scale is used for measuring-
Which of the following pairs is incorrect?
Which of the following pairs is incorrect?
Nitrogen constitutes nearly- % of the atmosphere.
Nitrogen constitutes nearly- % of the atmosphere.
Which one of the following is used for bleaching purposes?
Which one of the following is used for bleaching purposes?
The universal blood group donor is—
The universal blood group donor is—
Which among the following is a natural polymer?
Which among the following is a natural polymer?
Which one of the following has the shortest wave length?
Which one of the following has the shortest wave length?
Which one of the following is used for bleaching purposes?
Which one of the following is used for bleaching purposes?
Mark the wrong combination—
Mark the wrong combination—
Which Vitamin do we get from sun ray?
Which Vitamin do we get from sun ray?
What are the main constituents of biogas?
What are the main constituents of biogas?
Who invented the doctor's thermometer?
Who invented the doctor's thermometer?
