Odisha Board - Class 9

Biology question bank (Life Science (ଜୀବ ବିଜ୍ଞାନ - ୯))

Practice 480 free Odisha Board - Class 9 Life Science (ଜୀବ ବିଜ୍ଞାନ - ୯) - Biology questions with answers and step-by-step solutions.

Q1.

ବିଦ୍ୟୁତ୍ ଓ ଓମ୍‌ଙ୍କ ନିୟମ (Electricity): 'କୋଷ - ଜୀବନର ମୌଳିକ ଏକକ' ଅନୁସାରେ ବିଭବାନ୍ତର $V$ ଓ ବିଦ୍ୟୁତ୍ ପ୍ରବାହ $I$ ର ସମ୍ପର୍କ କ’ଣ?


(A)
$V = IR$ (ତାପମାତ୍ରା ସ୍ଥିର ରହିଲେ ପରିବାହୀରେ ପ୍ରବାହ ବିଭବାନ୍ତର ସହ ସମାନୁପାତୀ) (କୋଷ - ଜୀବନର ମୌଳିକ ଏକକ)
(B)
$V = \frac{{I}}{{R}}$
(C)
$I = VR$
(D)
$P = VI^2$
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Q2.

କାର୍ବନ ଓ ଏହାର ଯୌଗିକ: 'କୋଷ - ଜୀବନର ମୌଳିକ ଏକକ' ହାଇଡ୍ରୋକାର୍ବନ୍ ଶ୍ରେଣୀର ସାଧାରଣ ସୂତ୍ର କ’ଣ?


(A)
ଆଲକେନ୍: $C_n H_{2n+2}$, ଆଲକିନ୍: $C_n H_{2n}$, ଆଲକାଇନ୍: $C_n H_{2n-2}$ (କୋଷ - ଜୀବନର ମୌଳିକ ଏକକ)
(B)
$C_n H_n$
(C)
$C_n H_{{2n+1}}$
(D)
ଏଥିମଧ୍ୟରୁ କୌଣସିଟି ନୁହେଁ
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